{"product_id":"pemko-411arl48-48-4-full-mortise-automatic-door-bottom-with-sponge-neoprene-mill-finish-aluminum-finish","title":"Pemko 411ARL48 48\" 4' Full Mortise Automatic Door Bottom with Sponge Neoprene Mill Finish Aluminum Finish","description":"\u003cp\u003eThe 411ARL48 full mortise automatic door bottom seals the gap between door and threshold when the door closes. This drop-down seal system installs completely flush within the door mortise, maintaining clean aesthetics on decorative doors in upscale condos, hotels, and commercial buildings. \u003ca href=\"\/companies\/pemko\"\u003ePemko\u003c\/a\u003e designed this weatherization component to stop air infiltration and improve energy efficiency without affecting door appearance.\u003c\/p\u003e\n\n\u003cp\u003eThe aluminum mill casing houses a sponge neoprene seal that automatically lowers when the door contacts the frame. Works with both 1-3\/4\" and 1-3\/8\" thick doors. Installation hardware and end plates come included. The mortised design means no visible surface mounting hardware disrupts the door profile.\u003c\/p\u003e\n\n\u003cp\u003eThis door bottom helps maintain fire door assembly integrity where \u003ca href=\"\/resources\/building-codes-standards\/fire-inspection-compliance\/ul-10c-fire-rated-doors\"\u003eUL 10C testing requirements\u003c\/a\u003e demand proper sealing during positive pressure fire tests. For broader building envelope weatherization context, see \u003ca href=\"\/resources\/building-codes-standards\/emergency-life-safety\/nfpa-101\"\u003eNFPA 101 requirements\u003c\/a\u003e that often reference proper door sealing systems.\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAnodized Aluminum Casing, Sponge Neoprene Seal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e48 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDoor Thickness\u003c\/th\u003e\n\u003ctd\u003e1-3\/4\" and 1-3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFull Mortise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e5 Years Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eCertified to UL 10C fire door assembly standards, UL 1784 air leakage testing, ANSI\/BHMA A156.22 door gasketing systems, and ASTM E-283 air infiltration testing. GREENGUARD Gold certified for low chemical emissions.\u003c\/p\u003e","brand":"Pemko","offers":[{"title":"Mill Finish Aluminum","offer_id":46266892976305,"sku":"411ARL48","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0529\/5269\/4961\/files\/0_a27282b1-6b24-479b-8acf-4dd163a923a2.webp?v=1775803819","url":"https:\/\/shop.usmadesupply.com\/products\/pemko-411arl48-48-4-full-mortise-automatic-door-bottom-with-sponge-neoprene-mill-finish-aluminum-finish","provider":"US Made Supply","version":"1.0","type":"link"}