{"title":"Toughened Double Glazing","description":"\u003cstyle\u003e\n  .pr-ctdg { max-width: 1140px; margin: 0 auto; padding: 0 16px; color: var(--pr-text, #1f2933); font-family: var(--pr-font-body, inherit); }\n  .pr-ctdg * { box-sizing: border-box; }\n  .pr-ctdg__hero { padding: 28px 0 12px; }\n  .pr-ctdg__hero h2 { font-size: 26px; margin: 0 0 10px; color: var(--pr-text, #1f2933); font-family: var(--pr-font-heading, inherit); }\n  .pr-ctdg__hero p { font-size: 17px; line-height: 1.6; margin: 0 0 12px; color: var(--pr-text-body, #1f2933); }\n  .pr-ctdg__hero strong { color: var(--pr-text, #1f2933); }\n  .pr-ctdg__personas { display: grid; grid-template-columns: 1fr; gap: 16px; padding: 12px 0 28px; }\n  @media (min-width: 720px) { .pr-ctdg__personas { grid-template-columns: 1fr 1fr; } }\n  .pr-ctdg__persona { border: 1px solid var(--pr-border-light, #e5e7eb); border-radius: var(--pr-radius-lg, 14px); padding: 24px; background: var(--pr-bg-white, #fff); box-shadow: var(--pr-shadow-sm, 0 1px 2px rgba(0,0,0,0.04)); 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gap: 8px; }\n  .pr-ctdg__chip { display: inline-block; padding: 8px 14px; background: var(--pr-bg-light, #f9fafb); border: 1px solid var(--pr-border-light, #e5e7eb); border-radius: var(--pr-radius-full, 999px); color: var(--pr-text, #1f2933); text-decoration: none; font-size: 13px; font-weight: 500; transition: background 0.15s, border-color 0.15s; }\n  .pr-ctdg__chip:hover { background: var(--pr-bg-white, #fff); border-color: var(--pr-accent, #D98E04); color: var(--pr-accent, #D98E04); }\n  .pr-ctdg__sticky-cta { margin: 12px 0 36px; padding: 20px 24px; background: var(--pr-text, #1f2933); color: #fff; border-radius: var(--pr-radius-lg, 14px); display: grid; grid-template-columns: 1fr; gap: 12px; align-items: center; }\n  @media (min-width: 720px) { .pr-ctdg__sticky-cta { grid-template-columns: 1fr auto; } }\n  .pr-ctdg__sticky-cta h3 { margin: 0 0 4px; font-size: 17px; color: #fff; }\n  .pr-ctdg__sticky-cta p { margin: 0; font-size: 14px; line-height: 1.5; color: #e5e7eb; }\n  .pr-ctdg__sticky-cta a { color: var(--pr-accent, #D98E04); font-weight: 600; text-decoration: none; }\n  .pr-ctdg__sticky-cta a:hover { text-decoration: underline; }\n  .pr-ctdg__sticky-cta .pr-ctdg__btn { background: var(--pr-accent, #D98E04); color: #fff; align-self: stretch; text-align: center; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"pr-ctdg\"\u003e\n\n  \u003csection class=\"pr-ctdg__hero\"\u003e\n    \u003ch2\u003eToughened double glazing — Class 1(C)1 impact rating, critical-location compliant by default\u003c\/h2\u003e\n    \u003cp\u003e\u003cstrong\u003eIf the pane is in a door, beside a door (within 300mm of the door edge, up to 1500mm high), or in a window with the lowest edge below 800mm from the floor — Building Regs Approved Document N requires impact-rated safety glass.\u003c\/strong\u003e Toughened double-glazed sealed units are the most common, most cost-effective answer. Toughened to \u003cstrong\u003eBS EN 12150\u003c\/strong\u003e, classified \u003cstrong\u003eClass 1(C)1\u003c\/strong\u003e impact, around five times stronger than annealed glass, and they break into harmless granules rather than dagger-shaped shards. Pane Relief manufactures replacement toughened DG units in stock and bespoke sizes, with optional low-E coatings, argon fills, warm-edge spacers, and acoustic or laminated counter-panes.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-ctdg__personas\"\u003e\n    \u003cdiv class=\"pr-ctdg__persona\"\u003e\n      \u003cspan class=\"pr-ctdg__persona-tag\"\u003eHomeowner\u003c\/span\u003e\n      \u003ch3\u003eReplacing a critical-location DG unit\u003c\/h3\u003e\n      \u003cp\u003eCracked toughened in a door, sidelight, low window, or stairwell? You can't legally replace it with non-safety glass. We ship UKCA-marked toughened DG units with the BS EN 12150 kitemark laser-etched in the corner, ready to drop straight in. Free UK mainland delivery, 10-year edge-seal warranty, helpline 08:00-18:00 Mon-Fri.\u003c\/p\u003e\n      \u003ca class=\"pr-ctdg__btn\" href=\"\/pages\/configure\"\u003eConfigure my unit\u003c\/a\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"pr-ctdg__persona\"\u003e\n      \u003cspan class=\"pr-ctdg__persona-tag\"\u003eTrade\u003c\/span\u003e\n      \u003ch3\u003eInstaller, builder, FENSA registered\u003c\/h3\u003e\n      \u003cp\u003eNet 30 trade accounts, volume tiers on 5+\/20+\/50+ units, scheduled site delivery, and a full BS EN 12150 + BS EN 1279 Declaration of Performance on every order — what you need for Building Control sign-off without paperwork chasing.\u003c\/p\u003e\n      \u003ca class=\"pr-ctdg__btn pr-ctdg__btn--ghost\" href=\"\/pages\/bulk-orders\"\u003eTrade pricing \u0026amp; bulk\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-ctdg__section\"\u003e\n    \u003ch2\u003ePick your toughened DG configuration\u003c\/h2\u003e\n    \u003cp class=\"pr-ctdg__lede\"\u003eSix common toughened DG specifications. Pick the closest match; the configurator handles any combination.\u003c\/p\u003e\n    \u003cdiv class=\"pr-ctdg__finder\"\u003e\n      \u003ca class=\"pr-ctdg__tile\" href=\"\/products\/toughened-double-glazed-unit\"\u003e\n        \u003cspan class=\"pr-ctdg__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2l8 4v5c0 5.25-3.5 9.74-8 11-4.5-1.26-8-5.75-8-11V6l8-4z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.5l2.5 2.5 4.5-4.5\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eBoth panes toughened\u003c\/h3\u003e\n        \u003cp\u003eStandard 4-20-4 or 4-16-4 toughened-toughened DG. Most common spec for doors and sidelights.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__tile\" href=\"\/products\/toughened-double-glazed-unit\"\u003e\n        \u003cspan class=\"pr-ctdg__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"5\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 1v2M12 21v2M4.22 4.22l1.42 1.42M18.36 18.36l1.42 1.42M1 12h2M21 12h2M4.22 19.78l1.42-1.42M18.36 5.64l1.42-1.42\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eToughened + low-E\u003c\/h3\u003e\n        \u003cp\u003eOne toughened pane + one low-E coated toughened pane. Energy-efficient critical-location unit, A\/B rated.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__tile\" href=\"\/products\/toughened-laminated-double-glazed-unit\"\u003e\n        \u003cspan class=\"pr-ctdg__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003crect x=\"5\" y=\"11\" width=\"14\" height=\"10\" rx=\"2\"\u003e\u003c\/rect\u003e\u003cpath d=\"M8 11V7a4 4 0 018 0v4\"\u003e\u003c\/path\u003e\u003ccircle cx=\"12\" cy=\"16\" r=\"1.5\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eToughened-laminated\u003c\/h3\u003e\n        \u003cp\u003eOuter toughened + inner laminated. Belt-and-braces safety. Schools, hospitals, balustrades, glazed entrances.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__tile\" href=\"\/products\/toughened-double-glazed-unit\"\u003e\n        \u003cspan class=\"pr-ctdg__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2.69l5.66 5.66a8 8 0 11-11.31 0L12 2.69z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eOversized toughened DG\u003c\/h3\u003e\n        \u003cp\u003ePanels up to 2400×1200mm stock. Patio doors, bi-folds, large picture windows. Toughened-toughened only beyond 1.6m².\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__tile\" href=\"\/products\/toughened-double-glazed-unit\"\u003e\n        \u003cspan class=\"pr-ctdg__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2.69l5.66 5.66a8 8 0 11-11.31 0L12 2.69z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eObscure toughened\u003c\/h3\u003e\n        \u003cp\u003eToughened obscure (Pilkington Texture range) for bathrooms, en-suites, stairwells. P5+ privacy ratings.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__tile\" href=\"\/pages\/configure\"\u003e\n        \u003cspan class=\"pr-ctdg__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"10\"\u003e\u003c\/circle\u003e\u003cpath d=\"M8 12l3 3 5-5\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eHeat-soaked toughened\u003c\/h3\u003e\n        \u003cp\u003eBS EN 14179 heat-soak treatment. Overhead, balustrade, frameless, and any critical-safety application.\u003c\/p\u003e\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-ctdg__section pr-ctdg__measure\"\u003e\n    \u003ch2\u003eHeat-soak testing and the nickel-sulphide question\u003c\/h2\u003e\n    \u003cp class=\"pr-ctdg__lede\"\u003eToughened has one well-known failure mode: rare nickel-sulphide inclusions causing spontaneous breakage years after installation. Here's when to specify the heat-soak upgrade.\u003c\/p\u003e\n    \u003cdiv class=\"pr-ctdg__info\"\u003e\n      \u003cdiv class=\"pr-ctdg__info-card\"\u003e\n        \u003ch3\u003eWhat heat-soaking does\u003c\/h3\u003e\n        \u003cp\u003eThe toughened pane is held at \u003cstrong\u003e290°C for two hours\u003c\/strong\u003e in a calibrated oven per BS EN 14179. Any pane with an unstable nickel-sulphide inclusion fails in the factory rather than in your window five years later. Heat-soaked toughened carries a lifetime no-spontaneous-breakage warranty.\u003c\/p\u003e\n        \u003cp\u003eCost premium: typically \u003cstrong\u003e15-20%\u003c\/strong\u003e over standard toughened. Lead time adds 3-5 working days.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"pr-ctdg__info-card\"\u003e\n        \u003ch3\u003eWhen to specify heat-soaking\u003c\/h3\u003e\n        \u003col\u003e\n          \u003cli\u003e\n\u003cstrong\u003eMandatory:\u003c\/strong\u003e overhead glazing, balustrades, structural glazing, frameless glass walls.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eStrongly recommended:\u003c\/strong\u003e any glazing above ground floor where a spontaneous fall would endanger pedestrians.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eRecommended:\u003c\/strong\u003e high-value or hard-to-access installations where replacement labour cost dwarfs the heat-soak premium.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e standard residential ground-floor windows and doors — the spontaneous-breakage probability is around 8 per million panes per year, so most homeowners don't specify it.\u003c\/li\u003e\n        \u003c\/ol\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-ctdg__faq\"\u003e\n    \u003ch2\u003eToughened double glazing — common questions answered\u003c\/h2\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: Can I drill, cut, or sand toughened glass after manufacture?\u003c\/h3\u003e\n      \u003cp\u003e\u003cstrong\u003eNo — and this is the single most-broken rule on every job.\u003c\/strong\u003e Toughening is the final step in manufacture: the entire pane is in a state of compressive stress on the surfaces, balanced by tensile stress in the core. Any breach of that surface — drilling, scoring, edge-grinding, deep scratching, even some types of permanent marker pen if alcohol-based — releases the stress and the whole pane explodes into granules. All cut-outs, holes, edge polishing, bevels, and shaped profiles must be specified \u003cstrong\u003ebefore\u003c\/strong\u003e the pane enters the toughening furnace. Send a CAD or paper template at order; lead time on shaped toughened DG is 10-14 working days.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: How do I tell if my existing glass is toughened?\u003c\/h3\u003e\n      \u003cp\u003eLook for the \u003cstrong\u003ekitemark\u003c\/strong\u003e — typically laser-etched or sand-stamped in the bottom-right corner of the pane, reading \"BS EN 12150\" or older \"BS 6206-A\" with a triangle BSI logo. If there's no mark, look for the polariser test: stand a few metres back with polarised sunglasses on; toughened glass shows distinctive iridescent leopard-spot patterns where the heat-treatment rollers contacted the glass during cooling. If both methods are inconclusive, send us a photo of the corner and we'll identify it from a glance.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: Is toughened DG the same as laminated DG for safety purposes?\u003c\/h3\u003e\n      \u003cp\u003eBoth meet the safety classification (toughened = Class 1(C)1, laminated typically = Class 2(B)2 or 1(B)1) but they behave very differently on impact. \u003cstrong\u003eToughened\u003c\/strong\u003e breaks into thousands of small harmless granules — perfect for low-level glazing, doors, sidelights. \u003cstrong\u003eLaminated\u003c\/strong\u003e breaks but holds — the shards stay glued to the PVB film, the pane stays in the frame. Laminated is the only legal spec overhead (toughened granules from above are still a hazard). For everything else, toughened is the default and cheaper choice; step up to laminated if retention matters (security, balustrade, school, hospital).\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: Can the inner pane be annealed if the outer is toughened?\u003c\/h3\u003e\n      \u003cp\u003eOnly if the inner pane is \u003cem\u003enot\u003c\/em\u003e in a critical location of its own — and the outer pane meeting the safety requirement is enough to comply. In practice, for door glass and low windows we strongly recommend both panes toughened (the configurator defaults to it): the cost delta is small, the hazard from a broken inner pane is the same as a broken outer pane, and any insurance assessor or Building Control inspector will look for matching safety marks on both faces. The exception: toughened-laminated combo, where the inner is intentionally laminated for retention.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: Are toughened DG units heavier than standard annealed DG?\u003c\/h3\u003e\n      \u003cp\u003eNo — toughening is heat treatment, not added mass. A 4-20-4 toughened DG unit weighs \u003cstrong\u003eexactly the same\u003c\/strong\u003e as a 4-20-4 annealed DG unit (around 20 kg\/m²). Where weight does go up is on toughened-laminated combos (laminated layer adds PVB mass) and on triple-glazed builds. We flag pane weight on every product spec sheet and the configurator output.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: Will toughened DG impact U-value or solar performance?\u003c\/h3\u003e\n      \u003cp\u003eNo. The toughening process doesn't change the glass's thermal or optical properties — a 4mm toughened pane has identical U-value, light transmittance, and solar gain to a 4mm annealed pane. The U-value of the sealed unit is driven by the spacer, gas fill, and low-E coating, not by whether the panes are toughened. So you can spec a toughened low-E argon-filled unit (A-rated) for a critical-location window and lose nothing on energy performance vs the non-safety equivalent.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: What's the lead time and warranty on toughened DG units?\u003c\/h3\u003e\n      \u003cp\u003eStock sizes: \u003cstrong\u003e7-10 working days\u003c\/strong\u003e. Bespoke rectangular: 10-12 working days. Shaped, oversized (\u0026gt;1500mm any side), or heat-soaked: 14-18 working days. Every unit ships with a \u003cstrong\u003e10-year edge-seal warranty\u003c\/strong\u003e (BS EN 1279-2 weathered durability), a \u003cstrong\u003e5-year warranty on low-E coatings\u003c\/strong\u003e, and on heat-soaked toughened, a \u003cstrong\u003elifetime no-spontaneous-breakage warranty\u003c\/strong\u003e. UKCA, kitemark, and Declaration of Performance available on request.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-ctdg__faq-item\"\u003e\n      \u003ch3\u003eQ: Can I replace a toughened unit with non-toughened if the building was built before current regs?\u003c\/h3\u003e\n      \u003cp\u003eLegally — replacement glazing is treated as new work under Approved Document N, so the current safety rules apply regardless of when the building was constructed. Practically — a competent glazier will always replace like-for-like or upgrade. If the existing pane has a kitemark and is in a critical location, the replacement \u003cstrong\u003emust\u003c\/strong\u003e also be safety-rated. Replacing toughened with annealed in a doorway is a Building Control infraction and a hard-to-defend claim if anyone is injured.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-ctdg__crosslinks\"\u003e\n    \u003ch2\u003eRelated guides and specifications\u003c\/h2\u003e\n    \u003cdiv class=\"pr-ctdg__chip-row\"\u003e\n      \u003ca class=\"pr-ctdg__chip\" href=\"\/collections\/safety-security-glass\"\u003eSafety \u0026amp; security glass overview\u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__chip\" href=\"\/collections\/laminated-security-glass\"\u003eLaminated security glass\u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__chip\" href=\"\/collections\/door-glass-units\"\u003eDoor glass units\u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__chip\" href=\"\/collections\/acoustic-double-glazing\"\u003eAcoustic double glazing\u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__chip\" href=\"\/pages\/configure\"\u003eGlass configurator\u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__chip\" href=\"\/pages\/bulk-orders\"\u003eTrade \u0026amp; bulk orders\u003c\/a\u003e\n      \u003ca class=\"pr-ctdg__chip\" href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-ctdg__sticky-cta\"\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eCompliant by default — toughened DG ships kitemarked\u003c\/h3\u003e\n      \u003cp\u003eNeed a non-standard size, shape, or heat-soak spec? Call \u003ca href=\"tel:01173303057\"\u003e0117 330 3057\u003c\/a\u003e (08:00-18:00 Mon-Fri) or \u003ca href=\"\/pages\/contact-us\"\u003esend drawings\u003c\/a\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003ca class=\"pr-ctdg__btn\" href=\"\/pages\/configure\"\u003eConfigure toughened DG\u003c\/a\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e\n","products":[{"product_id":"double-glazed-unit-1000-800-mm","title":"Double Glazed Unit – 1000 × 800 mm","description":"\u003ch2\u003eDouble Glazed Unit — 1000 × 800mm Ready-to-Fit\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003e1000 × 800mm double-glazed sealed unit\u003c\/strong\u003e is a ready-to-fit standard dimension — no waiting for custom manufacturing. Ideal for \u003cstrong\u003ecommon window sizes found across UK housing stock\u003c\/strong\u003e, this unit ships from our Bristol warehouse with typical dispatch within 1–2 working days.\u003c\/p\u003e\u003cp\u003eBuilt from two panes of quality float glass with a sealed, gas-filled cavity, this unit drops straight into standard window frames designed for the 1000 × 800mm aperture — one of the most common residential window sizes in the UK.\u003c\/p\u003e\u003ch2\u003eSpecification\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 1000mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 800mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Standard double-glazed sealed unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall thickness:\u003c\/strong\u003e 24mm or 28mm (specify when ordering)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis fixed-size unit is ideal for glaziers who need a \u003cstrong\u003equick turnaround\u003c\/strong\u003e on common replacements. Keep stock of popular sizes to offer same-day service to your customers. Volume discounts available for trade accounts.\u003c\/p\u003e\u003cp\u003eManufactured to \u003cstrong\u003eBS EN 1279\u003c\/strong\u003e standards with our full \u003cstrong\u003e10-year manufacturer's warranty\u003c\/strong\u003e. Delivered nationwide with protective edge guards and transit packaging.\u003c\/p\u003e\u003cp\u003eFor non-standard sizes, use our \u003cstrong\u003eglass configurator\u003c\/strong\u003e to get instant pricing on custom-cut sealed units — manufactured to order at our Bristol facility.\u003c\/p\u003e","brand":"Pane Relief","offers":[{"title":"Compact","offer_id":60899495608650,"sku":"TG-COMPACT-MTM","price":200.0,"currency_code":"GBP","in_stock":true},{"title":"Standard","offer_id":60899495641418,"sku":"TG-STANDARD-MTM","price":500.0,"currency_code":"GBP","in_stock":true},{"title":"Large","offer_id":60899495674186,"sku":"TG-LARGE-MTM","price":1200.0,"currency_code":"GBP","in_stock":true},{"title":"Extra Large","offer_id":60899495706954,"sku":"TG-XL-MTM","price":2500.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3515\/2458\/files\/double-glazed-sealed-unit-igu-product-cutaway_96471dcc-30fb-47d4-90f5-97802e8d8dac.webp?v=1773249496"},{"product_id":"safety-security-double-glazed-unit-made-to-measure","title":"Safety \u0026 Security Double-Glazed Unit – Made to Measure","description":"\u003ch2\u003eSafety \u0026amp; Security Double-Glazed Unit — Laminated, Attack-Resistant\u003c\/h2\u003e\u003cp\u003eWhen standard glass isn't enough, our \u003cstrong\u003eSafety \u0026amp; Security Double-Glazed Unit\u003c\/strong\u003e delivers certified attack resistance to \u003cstrong\u003eBS EN 356\u003c\/strong\u003e. Built with \u003cstrong\u003elaminated glass\u003c\/strong\u003e featuring PVB interlayers, this unit resists forced entry, impact, and accidental breakage — making it the right choice for ground-floor windows, doors, shopfronts, schools, and any application where security is paramount.\u003c\/p\u003e\u003cp\u003eUnlike toughened glass that shatters into small pieces on impact, laminated glass holds together when broken. The PVB interlayer bonds the glass fragments, maintaining a barrier even after multiple blows. This buys critical time during a break-in attempt and prevents dangerous glass shards from scattering.\u003c\/p\u003e\u003ch2\u003eAttack Resistance Classes\u003c\/h2\u003e\u003cp\u003eWe manufacture to all standard \u003cstrong\u003eBS EN 356\u003c\/strong\u003e resistance classes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eP1A:\u003c\/strong\u003e Resists 3 impacts from a 4.11kg steel ball dropped from 1.5m — basic safety glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP2A:\u003c\/strong\u003e 3 impacts from 3m drop height — enhanced safety\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP4A:\u003c\/strong\u003e 3 impacts from 9m drop height — anti-burglar rated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP5A:\u003c\/strong\u003e 9 impacts from 9m drop height — high security\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAll units also comply with \u003cstrong\u003eBS EN 12600\u003c\/strong\u003e impact safety classification, making them suitable for critical locations defined in Building Regulations Approved Document K (doors, side panels, low-level glazing below 800mm).\u003c\/p\u003e\u003cp\u003eMade to measure at our Bristol facility. Every unit carries \u003cstrong\u003eBS EN 1279\u003c\/strong\u003e certification and our \u003cstrong\u003e10-year warranty\u003c\/strong\u003e. \u003cstrong\u003eFENSA registered\u003c\/strong\u003e for Building Control compliance.\u003c\/p\u003e\u003cp\u003eConfigure your exact size, glass build-up, and security rating using our \u003cstrong\u003eglass configurator\u003c\/strong\u003e for instant pricing.\u003c\/p\u003e","brand":"Pane Relief","offers":[{"title":"Compact","offer_id":60899496558922,"sku":"TG-COMPACT-MTM","price":200.0,"currency_code":"GBP","in_stock":true},{"title":"Standard","offer_id":60899496591690,"sku":"TG-STANDARD-MTM","price":500.0,"currency_code":"GBP","in_stock":true},{"title":"Large","offer_id":60899496624458,"sku":"TG-LARGE-MTM","price":1200.0,"currency_code":"GBP","in_stock":true},{"title":"Extra Large","offer_id":60899496657226,"sku":"TG-XL-MTM","price":2500.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3515\/2458\/files\/double-glazed-sealed-unit-igu-product-cutaway_96471dcc-30fb-47d4-90f5-97802e8d8dac.webp?v=1773249496"}],"url":"https:\/\/panerelief.co.uk\/collections\/toughened-double-glazing.oembed","provider":"Pane Relief","version":"1.0","type":"link"}