Weatherstrip, Hollow Bulb Insert, 4 ft. L MPN:137SA-48
Weatherstrip, Hollow Bulb Insert, 4 ft. L
This hollow bulb insert weatherstrip from National Guard is a reliable solution for sealing gaps in doors. Made with durable silicone and aluminum components, it stays flexible in extreme temperatures down to -100°F. The anodized aluminum flange provides a secure fit and is fire-rated for added safety. With a maximum door gap of 1/8 inch, this weatherstrip is suitable for a variety of applications, including residential and commercial door installations. Its compact design and easy screw-in mounting make it a convenient choice for professionals and DIYers alike, ensuring a tight seal and helping to reduce energy loss and drafts.
Top product features:
- Stays Flexible to -100 Degrees F
- Fire Rated
- Insert Material Silicone
Top product applications:
- Weatherstripping for exterior doors to seal gaps and prevent air leaks
- Sealing gaps around door and window frames in commercial or industrial buildings
- Weatherproofing gaps around doors in RVs, trailers, and other mobile homes
Door Weatherstripping, Insert Type Bulb, Insert Material Silicone, Insert Color Gray, Insert Size 5/16 in, Flange Material Aluminum, Flange Color Gray, Flange Finish Anodized, Flange Height 1/4 in, Flange Width 7/8 in, Flange Thickness 0.063 in, Overall Length 4 ft, Overall Width 1 3/16 in, Overall Height 1 1/16 in, Stays Flexible to -100 Degrees F, Projection 5/16 in, Mounting Type Screw In, Max. Door Gap 1/8 in, Fire Rated Yes, For Use With Doors
Additional Information
- Country of Origin: US
- Drop Ship Item: No
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 1 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 50.00
- Package Width: 4.00
- Package Height: 3.00
- Package Weight: 1.29
Product info last updated on March 11, 2026 9:40pm UTC
Category: Door Hardware and Components