Automatic Door Bottom
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ZERO designs and builds automatic door bottoms to last. Our automatic door bottoms have been tested through 5 million cycles.
Automatic Door Bottom
Secured directly to the door jamb, these acoustical gaskets feature our unique Compress-O-Matic™ design with a sound-absorbing neoprene bulb that compresses to form a tight seal as the door is closed.
Both models include adjusting screws for field correction of irregular clearances that might compromise actual sound performance.
When used with a metal cased-opening frame, the #770 offers the added benefit of eliminating the need for an additional frame stop–and its unaesthetic projection into the door opening.
The gasket is also listed for use with both wood and metal acoustical doors with fire listings ranging from 20 to 90 minutes under both negative a positive-pressure testing standards. It is exceptional engineering, design features, and performance have made the #770 our long-time favorite for acoustical engineers and specifier.
- UL Rated
- Aluminum Finish
- Solid neoprene seal - weatherproof and remains flexible in extreme temperatures.
- Fully Adjustable up to .3 inches
- Installed as surface-mounted
- Easily Trimmable
- Width: 7/8"
- Depth: 1 1/2"
- Size: Standard 3' 0" x 6' 8" Door Opening
- Finish: Brushed Aluminum
- Gasket: Premium Sponge Neoprene
Positive Pressure Tested Gasket Material for Fire Doors. Intended for application to/with listed steel-covered composite; hollow metal-type fire doors rated up to 3 hours; wood- and plastic-covered composite-type fire doors rated up to 1 1/2 hours; wood-core type fire floors rated up to 20 minutes.
Also classified in accordance with UBC 7-2, Fire Tests of Door Assemblies (1997).
Meets UL10B, UL10C and UBC 7-2 (1997) part 2 Category H. Can use on 'S' Labeled doors. 17L5
The experts at Soundproofing Company have created detailed step-by-step instruction manuals that are included with every purchase.Download Datasheet
Shipping & Liability Statement
$100 Minimum Order for FREE SHIPPING
Additional $25 Shipping Charge for orders less than $100.
Warehouse Fee of +$10 per order.
60 Days on all Returns All returned unused items are subject to warehouse and 20% re-stock fees. No Returns on Open/Partial Cases, Pails, Single Tubes, Outlet Putty Pads
The Soundproofing Company presents these products and construction concepts with the understanding that local Building Codes vary. It is the responsibility of the installer to ensure product is properly installed, and that these concepts meet local Building Code. The Soundproofing Company is not liable for mis-installation or non-compliance with local code.
Soundproofing Company, Inc.
1311 Straits Drive. Bay City, MI 48706
Support: (800) 397-8791
Noisy floors are a significant and growing issue as more people are opting for hard surface flooring. This creates distinct soundproofing challenges. We offer solutions tailored to your commercial or residential needs.