Need it fast? Our Similar Product Barzen AM30 Automatic Door Bottom — ships next business day at a lower price. Available in custom sizes
This Zero International #364, Fully Mortised, Heavy Duty Automatic Door Bottom will block sound, light and drafts by creating a strong seal at the bottom of your door. Fitted with a solid neoprene bulb seal and high quality mechanism that has been successfully tested through 5 million cycles! Rated for smoke and fire and length is custom cut to size.
To determine size required, see How to Measure for an Automatic Door Bottom.
The fully mortised aspect of this automatic door bottom is great for high end designer doors and luxury hotels and condo units that prefer their doors retain their clean, unobtrusive look.
Seal: High quality solid neoprene bulb with a maximum effective drop of 1". Interior is rubber filled for added protection.
Installation: Installation instructions and screws provided.
Sizing: To determine sizing, see How To Measure For An Automatic Door Bottom.
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. Casing dimensions remain the same. To purchase, select from options above.
About Easy Access End Caps: This product comes with standard end caps. Easy Access End Cap brackets can be ordered by selecting link. Easy Access Brackets are designed to secure Mortised Automatic Door Bottoms to the door without using bottom screws, enabling easy access for repairs and maintenance and for the unit to be removed without taking the door off the frame. Hospitals and health care centers may need to remove the rubber insert for cleaning purposes.
Please note, images are for illustrative purposes only. They are not actual photos. Therefore, actual colors may vary slightly and size many 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 here to view our full Warranty Policy.
For even higher sound control, see our Zero International #369 Automatic Door Bottom, High Sound Mortised
The Automatic Door Bottom utilizes a concealed flat spring mechanism which is activated upon opening and closing of the door. A brass plunger is compressed when the door is closed to automatically drop the seal, starting from the hinge side first. The seal is raised when the door opens. This motion ensures a smooth drop without a drag, even on an uneven surface. It is compatible with a door saddle or against the floor. The door bottom is built from durable materials that are meant to last. It has been tested through 5 million cycles!
See also About Automatic Door Bottoms.
Click here for a Printable Copy of How to Install a Mortised 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: PREPARE YOUR DOOR BOTTOM
Remove door and cut mortise in bottom of door as per the dimensions of the provided product specs. NOTE: If a door is fire labeled or of special construction, mortise preparation must be done by the door manufacturer. |
|
STEP 2: MEASURE AND TRIM YOUR DOOR BOTTOM
Measure your door from side to side. That will determine the length required for your Door Bottom. |
|
Once you have you determine 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). You can trim from the edge up to one inch of the screw on the side wall of the ADB. |
|
STEP 3: APPLY YOUR AUTOMATIC DOOR BOTTOM
With door removed from opening, install the door bottom with plunger at the hinge side, fasten with screws provided and install door in opening. |
|
STEP 4: ADJUSTING YOUR AUTOMATIC DOOR BOTTOM
Screw the actuating plunger in or out as required until the gasketing just touches the sealing surface when the door is closed. It is not necessary to squash the gasket to provide an effective seal. |
|
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. |
This seal is amazing, the 1" drop allows for a very tight seal when the door closes. The Neoprene seal feels and works very substantially and blocks plenty of air from traveling. I really liked the product. Our clients love this unit. #sweepstakes. We ordered a 13.75" unit and it fit perfectly. PSM Construction Services, SoCal
We waited weeks for delivery because the company kept telling us it had shipped when it had not. After a cumbersome and time consuming installation, the sweep only fully deploys intermittently. Typically 50% drops into place as expected . We are very disappointed and still in need of a smooth reliable and well functioning sweep.
This is a pretty cool product . It was easy to install. It took me about 3 hours to complete , most of that time was making the mortise pocket. Now I have a good seal on the bottom of my door . The price was a bit much , but if it last then it will be worth it .
© 2011 - 2026 Trademark Hardware Inc. All rights reserved.
.jpg "How to Install an Automatic Door Bottom- Figure 1")
.jpg "How to Install an Automatic Door Bottom- Figure 1")
.jpg "How to Install an Automatic Door Bottom- Figure 1")
.jpg "How to Install an Automatic Door Bottom- Figure 1")
.jpg "How to Install an Automatic Door Bottom- Figure 1")
