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.
YDB308 Semi-mortised automatic door bottom creates a tight seal at the bottom of doors to prevent infiltration of sound, light, drafts and more. Equipped with a high quality, long-lasting neoprene seal and mechanism that has been successfully tested through 5 million cycles! This model is fire rated. Available in choice of anodized finishes and length 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
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Aluminum
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Finish
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Mill Finish/Clear Anodized/Dark Bronze Anodized
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Door Type
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Wooden Door
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Seal Type
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Neoprene Rubber Seal
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Mounting Type
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Semi-Mortised/Surface Mounted
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Maximum Drop Size
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0.75"(22.2mm)
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Functions
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Blocking penetration by: Sound,Air,Smoke,Flames
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Length
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Standard 36", 48"; Maximum 60"
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Accessories
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End Caps and Screws are provided
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Certificate
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Fire Rated - UL 10B/10C
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