{"product_id":"t450n-dual-casement-window-unit","title":"T450N Dual Casement Window Unit","description":"\u003ch2\u003eT450N Dual Casement Window Unit\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eT450N Dual Casement\u003c\/strong\u003e is a thermally-broken two-sash outswing casement window fabricated from \u003cstrong\u003e6063-T5 aluminum\u003c\/strong\u003e with polyamide thermal break struts and the same \u003cstrong\u003e5\/8\" sightline profile\u003c\/strong\u003e as the T450N window-wall system — designed to integrate seamlessly into T450N grid assemblies or stand alone in residential and light-commercial applications where ventilation, precision hardware, and architectural refinement are non-negotiable.\u003c\/p\u003e\u003cp\u003eThe unit ships with a \u003cstrong\u003efactory-installed multi-point locking espagnolette\u003c\/strong\u003e and \u003cstrong\u003econcealed European-style hinges rated at 220 lbs per leaf\u003c\/strong\u003e, providing the security and smooth operation that luxury projects demand. A dual-glazed Low-E IGU with argon fill delivers a \u003cstrong\u003eNFRC U-factor of 0.24\u003c\/strong\u003e, and the unit complies with \u003cstrong\u003eAAMA 450, ENERGY STAR\u003c\/strong\u003e, and applicable IBC ventilation requirements. From a Manhattan loft to a Pacific Heights townhouse, the T450N Dual Casement brings the precision of curtain-wall engineering to the residential window.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eStudio View — Both Sashes Open at 90°\u003c\/h3\u003e\u003cimg src=\"generation:\/\/faacd3ef-37c7-4589-82a1-75b3ab9f0426\" alt=\"T450N dual casement window unit with both sashes open at 90 degrees on white background showing 5\/8-inch center mullion, European hinges, and multi-point espagnolette handle in locked position\" style=\"width:100%;max-width:900px;\"\u003e\u003cp\u003e\u003cem\u003eThe T450N Dual Casement with both sashes open at 90°, displaying the 5\/8\" center mullion, concealed European hinges at the sash-to-frame junction, and the multi-point espagnolette handle in the locked position. The thermally-broken aluminum frame is visible in cross-section at the sill.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eInstalled Performance — Manhattan Loft, Architectural Drafting Table\u003c\/h3\u003e\u003cimg src=\"generation:\/\/68fa5f88-5047-44bb-99a5-6ea46aed5ad6\" alt=\"T450N dual casement window open over drafting table with architectural drawings in Manhattan loft conversion with New York skyline and water tower roofscape at late afternoon\" style=\"width:100%;max-width:900px;\"\u003e\u003cp\u003e\u003cem\u003eThe T450N Dual Casement open over a drafting table in a Manhattan loft conversion at late afternoon. The New York skyline and rooftop water towers are framed through the glass — the 5\/8\" sightline disappears, and the city becomes the view. The kind of window that makes a workspace feel like a studio.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eConcealed European Hinge Detail — 220 lb Load Rating\u003c\/h3\u003e\u003cimg src=\"generation:\/\/1ab7ab7d-2926-4c4f-bd21-fbb6014eb413\" alt=\"Close-up of concealed European hinge mechanism at sash-to-frame junction showing 220 lb load rating stamp on hinge body and precision aluminum mortise pocket\" style=\"width:100%;max-width:900px;\"\u003e\u003cp\u003e\u003cem\u003eThe concealed European hinge at the sash-to-frame junction, showing the 220 lb load rating stamp on the hinge body and the precision aluminum mortise pocket. The hinge is fully concealed when the sash is closed, maintaining the clean sightline profile on both interior and exterior faces.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background-color:#1a1a1a;color:#ffffff;\"\u003e\n\u003cth style=\"padding:10px 14px;text-align:left;border:1px solid #333;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"padding:10px 14px;text-align:left;border:1px solid #333;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003eT450N Thermally-Broken Aluminum Dual Casement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003eTwo-sash outswing casement; both sashes independently operable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eSightline\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e5\/8\" (15.9 mm) — matches T450N window-wall grid profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eGlazing Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003eDual-glazed Low-E IGU with argon fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eU-Factor (NFRC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e0.24 BTU\/hr·ft²°F (NFRC 100 certified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eHinge Rating (per leaf)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e220 lbs — concealed European-style, factory-installed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f9f9f9;\"\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eLocking System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003eMulti-point espagnolette, factory-installed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCompliance Standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border:1px solid #ddd;\"\u003eAAMA 450, ENERGY STAR, IBC ventilation requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eExtrusion Alloy:\u003c\/strong\u003e 6063-T5 aluminum  |  \u003cstrong\u003eThermal Break:\u003c\/strong\u003e Polyamide struts  |  \u003cstrong\u003eFinish:\u003c\/strong\u003e Class 1 anodize or AAMA 2605 PVDF powder coat — custom RAL available  |  \u003cstrong\u003eGrid Compatibility:\u003c\/strong\u003e T450N window-wall system\u003c\/p\u003e","brand":"Blomberg Windows","offers":[{"title":"Default Title","offer_id":49586931695855,"sku":"T450N-DC-OUTSWING","price":749.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1377\/4319\/files\/image_5450f12d-eecc-4438-968d-7e40f4b8f761.png?v=1779821517","url":"https:\/\/architecturalblombergllc.com\/products\/t450n-dual-casement-window-unit","provider":"Architectural Blomberg LLC","version":"1.0","type":"link"}