YDB307YDB307
YDB307
Automatic Door Bottoms

- AVAILABLE FINISHES: A, C, D
- WIDTH: 1” (25.4 mm)
- HEIGHT: 1-29/32” (48.4 mm)

Certificate:
- UL
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Product Description

These Automatic Door Bottoms ensure an efficient seal with an adjustable plunger that is compressed against the frame as the door is closed, activating a concealed flat spring mechanism. This mechanism drops the seal smoothly from the housing in a scissor-like motion. The seal compresses on either even or uneven surfaces and retracts automatically when the door is opened.


YDB307 Semi Mortised, Heavy Duty, Sound Rated Automatic Door Bottom provides the best sound seal possible for normal sound levels and will prevent infiltration of light, drafts and more. Fitted with a high quality sponge neoprene seal and high quality mechanism that has been successfully tested through 5 million cycles. Rated for fire, smoke and sound. Available in various anodized finishes and is custom cut to size.


Maximum order length is 60" unless noted otherwise. Lengths up to 96" on some models available as engineering special order.


Retainer Material
Aluminum
Finish
Mill Finish/Clear Anodized/Dark Bronze Anodized
Door Type
Wooden Door
Seal Type
Neoprene Rubber Seal
Mounting Type
Semi-Mortised, Surface Mounted
Maximum Drop Size
0.875"(22.23mm)
Door Thickness
1-3/4"(44.45mm)
Functions
Blocking penetration by: Sound,Air,Smoke,Flames
Length
Standard 36", 48"; Maximum 60"
Accessories
End Caps and Screws are provided
Certificate
Fire Rated - UL 10B/10C


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