Automatic Door Bottoms
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 bronze anodized.
Automatic Door Bottom Catalogue 2020
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Clean Air Certificate
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Door Bottoms
| Size | Features | Ratings | CAD Details DWG Format |
Product Instruction Sheet PDF Format |
Product Details PDF Format |
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| CT-50 | 1-13/16"H. X 9/16"W | *Regular duty surface or semi-mortised *Neoprene seal *Available in bronze |
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Fire Rated |  |
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| CT-50F | 1-13/16"H. X 9/16"W | *Regular duty surface or semi-mortised *Felt seal *Available in bronze |
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N/A | |
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| CT-50SS | 2-7/32"H X 5/8"W | *Regular duty surface or semi-mortised *Neoprene seal *Stainless steel cover |
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Fire Rated | |
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| CT-51 | 1-1/2"H X 17/32"W | *Regular duty mortised *Neoprene seal *Mill finish |
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Fire Rated | |
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| CT-51F | 1-1/2"H X 17/32"W | *Regular duty mortised *Felt seal *Mill finish |
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N/A | |
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| CT-52 | 1-29/32"H X 29/32"W | *Heavy duty surface or semi-mortised *Neoprene seal *Available in bronze |
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Fire Rated | |
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| CT-52F | 1-29/32"H X 29/32"W | *Heavy duty surface or semi-mortised *Felt seal *Available in bronze |
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N/A | |
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| CT-52B | 1-29/32"H X 29/32"W | *Heavy duty surface or semi-mortised *Brush seal *Available in bronze |
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N/A | |
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| CT-52S | 1-29/32"H X 29/32"W | *Heavy duty surface or semi-mortised *Silicone seal *Available in bronze |
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Fire Rated | |
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| CT-52SS | 2-1/2"H X 31/32"W | *Heavy duty surface *Neoprene seal *Stainless steel cover |
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Fire Rated | |
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| CT-52S-SS | 2-1/2"H X 31/32"W | *Heavy duty surface *Silicone seal *Stainless steel cover |
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Fire Rated | |
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| CT-53 | 1-5/8"H. X 15/16"W | *Heavy duty mortised *Neoprene seal *Mill finish |
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Fire Rated | |
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| CT-53F | 1-5/8"H. X 15/16"W | *Heavy duty mortised *Felt seal *Mill finish |
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N/A | |
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| CT-53B | 1-5/8"H. X 15/16"W | *Heavy duty mortised *Brush seal *Mill finish |
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N/A | |
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| CT-53S | 1-5/8"H. X 15/16"W | *Heavy duty mortised *Silicone seal *Mill finish |
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Fire Rated | |
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| CT-54 | 1"H. X 1-3/8"W | *For hollow metal doors *Silicone seal |
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Fire Rated | |
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| Features | Application | Ratings | CAD Details DWG Format |
Product Instruction Sheet PDF Format |
Product Details PDF Format |
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| CT-730 | N/A | For wood or metal doors. |  |
N/A | |
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| Features | Available In | Ratings | CAD Details DWG Format |
Product Instruction Sheet PDF Format |
Product Details PDF Format |
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| CT-548 | 3/8"H x 1-3/8"W | Extruded Aluminum & Santoprene Co-Extrusion |  |
Fire Rated | |
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| CT-548AF | 3/8"H x 1-3/8"W Better Air Flow |
Extruded Aluminum & Santoprene Co-Extrusion |  |
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| CT-55 | 3/8"H x 1-3/8"W | Extruded Aluminum & Pile |  |
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| CT-745 | For 1-3/4" Doors | Extruded Aluminum w/Drip Cap & Vinyl |  |
Fire Rated | |
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