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Heavy Duty Concealed
CT-54N Heavy Duty Concealed ADB
for Standard Hollow Metal Doors
When nothing but the best will do for the bottom of your hollow metal doors.
K.N. Crowder Automatic Door Bottoms (ADB) are made from extruded aluminum combined with closed cell sponge neoprene, silicone, felt or brush.
It is activated when a plunger depresses against the door stop or jamb, sealing out draft, sound and light.
Surface or mortise types available in stock sizes 24", 30", 36", 42" and 48". These can be shortened up to 6" (from lock side) on job site (24" can be shortened 3" only).
Reversible for right or left hand installations. Maximum drop is 7/16". Also available in gold and bronze anodized.
- Designs
- Specifications
- Downloads
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Heavy Duty Concealed
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Heavy Duty Concealed
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Non fire rated
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Extruded anodized aluminum with neoprene seal
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Bronze or gold anodized, stainless steel options
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Vinyl seal option (fire rated)
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7/16" maximum drop
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1" thickness x 1-3/8" height
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Heavy duty concealed (full mortised)