{"product_id":"automatic-drop-down-door-bottom-seal","title":"Automatic Drop-Down Door Bottom Seal","description":"\u003ch1\u003eAutomatic Drop-Down Door Bottom Seal – 36 Inch\u003c\/h1\u003e\n\u003ch2\u003e🚪 Close the Door. Seal the Gap Automatically.\u003c\/h2\u003e\n\u003cp\u003eTired of cold drafts, hallway noise and dust slipping through the gap beneath your door?\u003c\/p\u003e\n\u003cp\u003eThis surface-mounted automatic door bottom creates a continuous seal when the door closes, then retracts when the door opens—helping protect the floor while keeping the doorway easier to use.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/4633\/5322\/files\/ChatGPT_Image_2026_9_8__03_27_41__1.png?v=1788852561\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003e✨ Automatic Drop-Down Action\u003c\/h2\u003e\n\u003cp\u003eClosing the door activates the side plunger, causing the rubber gasket to lower in a controlled, scissor-like motion.\u003c\/p\u003e\n\u003cp\u003eOpen the door and the seal retracts, preventing unnecessary dragging across the floor.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/4633\/5322\/files\/ChatGPT_Image_2026_9_8__03_27_48__6.png?v=1788852561\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003e🌬️ Block the Unwanted Gap\u003c\/h2\u003e\n\u003cp\u003eA gap under the door can allow air, dust, debris, sound and smoke to pass between rooms.\u003c\/p\u003e\n\u003cp\u003eThe solid rubber extrusion lowers across the bottom of the door to create a more complete barrier where it is needed most.\u003c\/p\u003e\n\u003ch2\u003e🔇 Help Reduce Unwanted Noise\u003c\/h2\u003e\n\u003cp\u003eCreate a quieter and more comfortable space by helping limit sound transfer through the open gap beneath the door.\u003c\/p\u003e\n\u003cp\u003eIdeal for offices, bedrooms, meeting rooms, apartment entrances and other spaces where privacy and comfort matter.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/4633\/5322\/files\/ChatGPT_Image_2026_9_8__03_27_49__7.png?v=1788852561\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003e📐 Self-Leveling on Uneven Floors\u003c\/h2\u003e\n\u003cp\u003eNot every floor is perfectly level.\u003c\/p\u003e\n\u003cp\u003eThe hinge side drops first, allowing the seal to self-level as it lowers. This helps maintain more consistent contact across floors with slight height variations.\u003c\/p\u003e\n\u003ch2\u003e🛡️ Concealed When the Door Opens\u003c\/h2\u003e\n\u003cp\u003eUnlike fixed sweeps that continuously rub against the floor, the gasket stays raised and concealed while the door is open.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/4633\/5322\/files\/ChatGPT_Image_2026_9_8__03_27_50__8.png?v=1788852561\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThis helps:\u003c\/p\u003e\n\u003cp\u003e✅ Reduce floor friction\u003cbr\u003e✅ Prevent dragging while opening\u003cbr\u003e✅ Support smoother door movement\u003cbr\u003e✅ Reduce unnecessary gasket wear\u003c\/p\u003e\n\u003ch2\u003e🔄 Reversible Door Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe unit comes configured for a standard right-hand installation and can be reversed in the field when required.\u003c\/p\u003e\n\u003cp\u003eAlways confirm your door orientation and installation requirements before mounting.\u003c\/p\u003e\n\u003ch2\u003e🔩 Surface-Mounted Installation\u003c\/h2\u003e\n\u003cp\u003eThe unit mounts directly to the surface of the door, making it suitable for applications where a concealed mortised seal is not required.\u003c\/p\u003e\n\u003cp\u003eMounting screws are supplied with the product.\u003c\/p\u003e\n\u003ch2\u003e🔥 Fire-Rated Construction\u003c\/h2\u003e\n\u003cp\u003eThis model is listed as fire rated and is designed for use in applications requiring a more complete door-bottom seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Fire-rating performance depends on correct installation and compatibility with the complete rated door assembly. Always follow applicable building codes and professional installation requirements.\u003c\/p\u003e\n\u003ch2\u003eWhy You’ll Love It\u003c\/h2\u003e\n\u003cp\u003e✅ Activates automatically when the door closes\u003cbr\u003e✅ Retracts when the door opens\u003cbr\u003e✅ Helps block drafts, debris, sound and smoke\u003cbr\u003e✅ Self-levels across slightly uneven floors\u003cbr\u003e✅ Solid rubber sealing extrusion\u003cbr\u003e✅ Clear anodized aluminum housing\u003cbr\u003e✅ Surface-mounted design\u003cbr\u003e✅ Field-reversible configuration\u003c\/p\u003e\n\u003ch2\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/4633\/5322\/files\/ChatGPT_Image_2026_9_8__03_27_47__4.png?v=1788852562\" alt=\"\"\u003eHow It Works\u003c\/h2\u003e\n\u003ch3\u003e1. Open the Door\u003c\/h3\u003e\n\u003cp\u003eThe rubber gasket remains raised, reducing contact with the floor.\u003c\/p\u003e\n\u003ch3\u003e2. Close the Door\u003c\/h3\u003e\n\u003cp\u003eThe side plunger contacts the door frame and activates the mechanism.\u003c\/p\u003e\n\u003ch3\u003e3. Automatic Seal\u003c\/h3\u003e\n\u003cp\u003eThe gasket lowers in a scissor-like motion and self-levels across the floor.\u003c\/p\u003e\n\u003ch3\u003e4. Open Again\u003c\/h3\u003e\n\u003cp\u003eThe seal automatically retracts into the housing.\u003c\/p\u003e\n\u003ch2\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/4633\/5322\/files\/ChatGPT_Image_2026_9_8__03_27_45__3.png?v=1788852561\" alt=\"\"\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Automatic Door Bottom Seal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Surface Mounted\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e 36 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWidth:\u003c\/strong\u003e 19\/32 inch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHeight:\u003c\/strong\u003e 2 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHousing Material:\u003c\/strong\u003e Aluminum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSeal Material:\u003c\/strong\u003e Solid Rubber\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Clear Anodized Aluminum\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandard Orientation:\u003c\/strong\u003e Right Hand\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReversible:\u003c\/strong\u003e Yes, field reversible\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFire Rated:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e Mounting screws\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnd Caps:\u003c\/strong\u003e Not included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Door-bottom gap sealing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cp\u003e📏 Measure the exact width of your door before purchasing.\u003c\/p\u003e\n\u003cp\u003e🚪 Confirm that the door and frame provide enough space for the surface-mounted housing and activation plunger.\u003c\/p\u003e\n\u003cp\u003e🛠️ Professional installation is recommended when the product will be used as part of a fire-rated or code-regulated door assembly.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDoes the seal drag across the floor?\u003c\/h3\u003e\n\u003cp\u003eThe gasket is designed to retract when the door opens and lower when the door closes, reducing continuous floor contact.\u003c\/p\u003e\n\u003ch3\u003eWill it work on a slightly uneven floor?\u003c\/h3\u003e\n\u003cp\u003eThe scissor-style mechanism is designed to self-level and compensate for moderate floor variation.\u003c\/p\u003e\n\u003ch3\u003eWhat does the product help block?\u003c\/h3\u003e\n\u003cp\u003eIt helps reduce the movement of drafts, dust, debris, noise and smoke through the gap beneath the door.\u003c\/p\u003e\n\u003ch3\u003eIs it suitable for left-hand doors?\u003c\/h3\u003e\n\u003cp\u003eThe product is supplied in a standard right-hand configuration but is described as field reversible.\u003c\/p\u003e\n\u003ch3\u003eAre end caps included?\u003c\/h3\u003e\n\u003cp\u003eNo. End caps are not included with this model.\u003c\/p\u003e\n\u003ch3\u003eCan I rely on it for a fire-rated doorway?\u003c\/h3\u003e\n\u003cp\u003eThe product is listed as fire rated, but the complete door assembly must be compatible and installed according to applicable codes. Confirm requirements with a qualified installer.\u003c\/p\u003e\n\u003ch2\u003e🚪 Seal the Gap Only When You Need It\u003c\/h2\u003e\n\u003cp\u003eEnjoy a cleaner, quieter and more comfortable doorway without a fixed seal constantly scraping across the floor.\u003c\/p\u003e\n\u003cp\u003eClose the door and the seal lowers automatically. Open it and the gasket retracts out of the way.\u003c\/p\u003e\n\u003cdiv style=\"text-align:center; padding:32px 20px; background:#f3f5f7; border-radius:12px; margin-top:30px;\"\u003e\n  \u003ch2 style=\"margin:0 0 12px;\"\u003e🚪 Ready to Seal the Gap?\u003c\/h2\u003e\n  \n  \u003cp style=\"margin:0 auto 22px; max-width:620px;\"\u003e\n    Block drafts, dust and unwanted noise with an automatic seal that lowers when the door closes and retracts when it opens.\n  \u003c\/p\u003e\n  \n  \u003ca href=\"#\" style=\"display:inline-block; padding:16px 34px; background:#173f73; color:#ffffff; text-decoration:none; font-weight:700; font-size:18px; border-radius:6px;\"\u003e\n    GET YOUR DOOR SEAL TODAY\n  \u003c\/a\u003e\n  \n  \u003cp style=\"margin:16px 0 0; font-size:14px;\"\u003e\n    ✅ Automatic Operation   ·   ✅ Surface Mounted   ·   ✅ Mounting Screws Included\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"tjx","offers":[{"title":"23.62 × 1.18 × 0.55 in","offer_id":44028498837594,"sku":"NC02292609085738-U型【长度600mm】性价款","price":29.98,"currency_code":"USD","in_stock":true},{"title":"31.50 × 1.18 × 0.55 in","offer_id":44028498870362,"sku":"NC02292609085738-U型【长度800mm】性价款","price":33.98,"currency_code":"USD","in_stock":true},{"title":"36.02 × 1.18 × 0.55 in","offer_id":44028498903130,"sku":"NC02292609085738-U型【长度915mm】性价款","price":36.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/4633\/5322\/files\/ChatGPT_Image_2026_9_8__03_27_49__7.png?v=1788852561","url":"https:\/\/sthael.com\/products\/automatic-drop-down-door-bottom-seal","provider":"Sthael","version":"1.0","type":"link"}