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When nothing but the best will do for the bottom of your doors. Our Automatic Door Bottoms (ADB) are made from extruded aluminum combined with closed cell sponge neoprene, felt or brush and 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 5/8" and they are available in gold and bronze anodized.

  Automatic Door Bottoms Catalogue
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Extruded Aluminum Automatic Door Bottoms



Automatic Door Bottoms
Door Bottoms    Adjustable Door Bottoms    Door Shoes   

Automatic Door Bottom Instructions    English   Français

  Size Features Ratings CAD DETAILS
DWG format
Product Instruction Sheet
PDF format
Product Details
PDF format
1-13/16"H. X 9/16"W.
*Regular duty surface or semi-mortised
*Neoprene seal
*Available in bronze & gold anodized
Fire rated.   CT-50 Details
1-13/16"H. X 9/16"W.
*Regular duty surface or semi-mortised
*Felt seal
*Available in bronze & gold anodized
N/A   CT-50F Details
2-7/32"H X 5/8"W *Regular duty surface or semi-mortised
*Neoprene seal
*Stainless steel cover
Fire rated.   CT-50SS Details
1-1/2"H X 17/32"W *Regular duty mortised
*Neoprene seal
*Mill finish
N/A   CT-51 Details
1-1/2"H X 17/32"W *Regular duty mortised
*Felt seal
*Mill finish
N/A   CT-51F Details
1-29/32"H X 29/32"W *Heavy duty surface or semi-mortised
*Neoprene seal
*Available in bronze & gold anodized
Fire Rated   CT-52 Details
1-29/32"H X 29/32"W *Heavy duty surface or semi-mortised
*Felt seal
*Available in bronze & gold anodized
N/A   CT-52F Details
1-29/32"H X 29/32"W *Heavy duty surface or semi-mortised
*Brush seal
*Available in bronze & gold anodized
N/A   CT-52B Details
1-29/32"H X 29/32"W *Heavy duty surface or semi-mortised
*Silicone seal
*Available in bronze & gold anodized
Fire Rated   CT-52S Details
2-1/2"H X 31/32"W *Heavy duty surface or semi-mortised
*Neoprene seal
*Stainless steel cover
Fire Rated   CT-52SS Details
1-5/8"H. X 15/16"W.
*Heavy duty mortised
*Neoprene seal
*Mill finish
N/A   CT-53 Details
1-5/8"H. X 15/16"W.
*Heavy duty mortised
*Felt seal
*Mill finish
N/A   CT-53F Details
1-5/8"H. X 15/16"W.
*Heavy duty mortised
*Brush seal
*Mill finish
N/A   CT-53B Details
1-5/8"H. X 15/16"W.
*Heavy duty mortised
*Silicone seal
*Mill finish
N/A   CT-53S Details
1"H. X 1-3/8"W. *For hollow metal doors
*Vinyl seal
Fire rated.     CT-54 Details
1"H. X 1-3/8"W. *For hollow metal doors
*Neoprene seal.
Fire rated.     CT-54N Details

Features Application Ratings
N/A For wood or metal doors. N/A     CT-730 Details

Features Available In Ratings
3/8"H x 1-3/8"W Extruded Aluminum & Pile  
Fire Rated
    instruction sheet   CT-55 Details
For 1-3/4" Doors Extruded Aluminum w/Drip Cap & Vinyl
 Fire Rated
        CT-745 Details
1-3/8"H x 1-3/16"W Extruded Aluminum w/Drip Cap & Vinyl
 Fire Rated
        CT-746 Details
1-1/16"H x 1-1/2"W Extruded Aluminum with Vinyl
 Fire Rated
    instruction sheet   CT-747 Details
1/2"H x 1-1/4"W Extruded Aluminum with Vinyl
 Fire Rated
    instruction sheet   CT-748 Details


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