Zero #361, Automatic Door Bottom, Surface Mounted, Heavy Duty, Sponge Neoprene Seal, 1" Drop
Stock sizes are available to ship within 1 business day. Click here for our Quick Ship Barzen Surface Mounted Automatic Door Bottom.
This Zero International #361 Surface Mounted, 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. Equipped with a long lasting, high-quality sponge neoprene seal and mechanism that has been tested to 5 million openings and closings. Rated for fire, smoke and sound infiltration and available in various anodized finishes. Length is custom cut to size. View more details in the description below.
To determine sizing needed for your door bottom, see How to Measure for an Automatic Door Bottom.
This Zero International #361 Surface Mounted, 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. Equipped with a long lasting, high-quality sponge neoprene seal and mechanism that has been tested to 5 million openings and closings.
Installation: Installation instructions and screws included. Screws are colored to coordinate with casing.
Insert Replacement: Click here to purchase a Sponge Neoprene Replacement Seal for this product.
About Light Spring Strength: Light Spring Strength requires less operating force to activate than standard Strength. Light Spring is compatible with ADA Compliant Doors and can be easily used by those with limited mobility. Can also be applied to sliding doors. Casing dimensions remain the same. Select from options above if required.
Please note, images are for illustrative purposes only. They are not actual photos. Therefore, actual colors may vary slightly and size may be enlarged to show detail. See product specs for exact measurements.
This product has a 1 year guarantee against defects in material and workmanship.
Click to view our Full Warranty Policy.
See also our Zero International #367 High Sound Automatic Door Bottom for even higher sound control.
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QuickShipNo
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ManufacturerZero International
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MPN361
- Product Design
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Seal TypeNeoprene Rubber Seal
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Mounting TypeSurface Mounted
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Door TypeWooden Door, Hollow Metal Door
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- Dimensions
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Casing DimensionsCasing measures 1.901" by .916". Made of .093" thick aluminum.
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LengthCustom Cut to Size
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Drop SizeUp to 1" Drop
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- Installation
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HandingNon-Handed
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Installation ScrewsInstallation Screws Provided
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SizingTo determine sizing required see 'How to Size an Automatic Door Bottom'
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- Special Features
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Compatible Insert Replacement#363N Sponge Neoprene Replacement
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- Finishes
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FinishClear Anodized Aluminum (US28), Dark Bronze Anodized Aluminum (313), Gold Anodized Aluminum, Flat Black (US19)
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- Compliance Details
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Compliance DetailsFire Rated, Air Infiltration Rated, Sound Rated, BHMA Certified
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ANSI DesignationR3C3341
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Warranty1 Year Limited Warranty
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Automatic Door Bottoms utilize a concealed flat spring mechanism and plunger. When the door is closed, a brass plunger is compressed to automatically lower the seal, starting from the hinge side first. This motion ensures a smooth usage even on an uneven surface and prevents drag. The seal is automatically raised upon opening. These automatic door bottoms have been successfully tested through 5 million cycles!
See also About Automatic Door Bottoms.
Click here for a Printable Copy of How to Install an Automatic Door Bottom.
Automatic Door Bottoms are available with three mounting options: Surface Mounted, Semi-Mortised and Fully Mortised. A surface mounted application can be applied without removing the door from its hinges. For a semi-mortised, if the rabbet in the door is cut-out already, the door does not need to be removed. For a fully mortised application the door should be removed before starting. |
STEP 1: SIZING YOUR DOOR BOTTOM Once your door is ready for installation you need to determine the size required for your door bottom:
For visual presentation see How to Measure for an Automatic Door Bottom. |
Once you have determined the size needed, if necessary, trim your door bottom. Use a chop saw or table saw to create a perfectly straight cut. Note, Only trim opposite the actuating plunger, brass nut. (Trimming from the brass nut side will ruin your ADB).
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You can trim from the edge up to one inch of the screw in the side wall of the ADB. |
STEP 2: PREP FOR ATTACHING AUTOMATIC DOOR BOTTOM Surface Mounted and Semi-Mortised models need to be applied to the push side of the door only (the side with the door stops). The actuating plunger needs to be applied to the hinge side of the door for all applications. Place the automatic door bottom against the door Once you have the automatic door bottom leveled and positioned correctly, with a pencil or marker mark where the attachment screws need to be drilled. |
STEP 3: ATTACHING THE AUTOMATIC DOOR BOTTOM To make installation easier you can drill a pilot hole which will ensure you attach the door bottom to the correctly marked spot. With the screws provided, screw in the automatic door bottom. In some models, a plate is provided for the hinge side of the frame. This will protect the door frame from getting worn down by the actuating plunger. If provided, attach to corresponding point on the frame. |
STEP 4: TESTING YOUR AUTOMATIC DOOR BOTTOM Now that the door bottom is attached, test the door bottom by opening and closing the door to ensure there is a full seal. If the seal does not come down far enough twist the brass nut out, if it seals too tight twist the brass nut in. |
Once you have followed through with all the instructions your Automatic Door Bottom is good to go! Enjoy years of quality sound, draft and light infiltration control with your new door bottom. For additional assistance and product information, feel free to contact us. Our trained and friendly staff will guide you with all your soundproofing needs. |