Zero International 367AA Heavy...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$265.37
Zero International 367AA heavy-duty surface mounted automatic door bottom, aluminum body with brass magnetic actuator and neoprene seal, angled view

Zero International 367AA Heavy-Duty Surface Mounted Automatic Door Bottom

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Model: 367AA 16

In Stock (leaves warehouse same day if ordered before 3pm ET)

$265.37
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Zero 367AA Heavy-Duty Surface Mounted Automatic Door Bottom

The Zero 367AA is a heavy-duty, surface-mounted automatic door bottom engineered for commercial door assemblies where air, smoke, sound, and flame infiltration must be controlled. Zero's patented automatic mechanism drops a concealed flat spring-actuated seal the moment the door closes, compressing the adjustable plunger against the door frame, and retracts it fully on opening so the seal never drags across the floor during normal traffic.

Features & Specifications

  • Surface-mounted installation - no mortising required
  • Anodized aluminum (AA) body construction for corrosion resistance and long service life
  • Supplied with closed-cell sponge neoprene seal for effective compression against floor or saddle
  • Patented automatic drop mechanism activated by adjustable plunger at door frame contact
  • Seals against air infiltration, smoke, sound transmission, and flame penetration
  • Fire Rated: UL10C (positive pressure)
  • ANSI/BHMA Listed: 367AA - R3B3341
  • Available lengths: 16", 36", 38", 42"

Application Notes

Designed for commercial interior and exterior doors in applications requiring fire, smoke, or acoustic door bottom sealing - including office buildings, multi-family residential, healthcare, hospitality, and institutional facilities. Confirm door thickness and undercut clearance before ordering. Surface-mount profile is compatible with most standard commercial door stiles.

Product Specs

Commercial/Residential:
Commercial
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Bottom Sweeps and Door Shoes
Product Type:
Door Bottom
Product Finish:
Clear Anodized
Performance Rating:
Fire Rated - UL10C
Product Substrate:
Aluminum
Department:
Door Hardware

Zero International 367AA 16 – Frequently Asked Questions

1) Will the Zero 367AA automatic door bottom work on a fire-rated door?
Yes. The 367AA is fire rated to UL10C, the positive pressure test, and it is ANSI/BHMA listed under R3B3341 (covering the 367AA, 367BK, 367D and 367G). That combination is what a hospital, school or multi-family corridor door typically needs on the bottom of a rated opening, and it seals against smoke as well as flame. If your door schedule calls out a positive-pressure category, this is the seal type that answers it.
2) Do I have to mortise the door to install a Zero 367 automatic door bottom?
No mortising. The 367AA is the surface-mounted version of the Zero 367, so it screws to the face of the door at the bottom rail rather than being routed into it. That matters on two jobs in particular: retrofitting existing doors already hung in the frame, and hollow metal or rated doors you do not want to cut into. The trade-off is a visible housing on the door face and a small loss of clear opening height at the bottom.
3) What lengths does the Zero 367AA come in, and how do I pick one for my door width?
Five lengths: 16, 36, 38, 42 and 48 inches. An automatic door bottom is sized to the door width, not the frame opening, and it is cut down on site if the width falls between sizes, so order the next size up from your door width rather than the next size down. The 36 and 38 inch sizes cover standard 3-0 commercial leaves, 42 and 48 cover wide leaves and equipment or hospital doors, and the 16 inch is for narrow leaves and closet or communicating doors.
4) Will a Zero 367AA seal against a floor that is not perfectly flat?
The seal is closed-cell sponge neoprene, which compresses to take up variation between the door bottom and the floor or saddle, and the plunger at the hinge end is adjustable so you can set how far the seal drops. That handles the normal out-of-level you find in an older building or a corridor with a threshold at one door and bare tile at the next. What it does not do is bridge a large undercut, so measure the gap between the door bottom and the finished floor before ordering.
5) How does an automatic door bottom differ from a plain door sweep?
A sweep is fixed: the seal hangs below the door all the time and drags on the floor or carpet every cycle. The 367AA drops its seal only when the door closes, using a spring-actuated mechanism triggered by an adjustable plunger that contacts the frame, and lifts it clear again on opening. Choose the automatic bottom where you need a real seal against smoke, sound and air but the floor is carpet, tile with height changes, or high traffic that would chew up a sweep. Choose a sweep where the job is weather only and the budget or the door does not justify the mechanism.
6) Is the Zero 367AA suitable for an exterior door or a wet, corrosive location?
The body is anodized aluminum, clear anodized finish, which is the standard corrosion-resistant spec for door hardware exposed to weather or washdown, and Zero rates the 367 for commercial interior and exterior doors. Coastal and pool-adjacent openings are where the anodized body earns its keep over a mill or painted part. The AA suffix in 367AA is that clear anodized aluminum finish.
7) Can I use the Zero 367AA to cut down sound transfer between rooms?
Yes, and it is one of the few bottom seals worth specifying for it. The gap under a door is the largest single sound leak in an otherwise solid assembly, and the 367AA seals against sound transmission along with air and smoke because the neoprene seal compresses against the floor or saddle rather than hovering above it. Offices, exam rooms, hotel entries and classroom doors are the usual applications.
8) Can I match a Zero 367AA to automatic door bottoms already installed across my building?
If the existing doors carry a Zero 367, ordering the 367AA gives you the same surface-mounted device and the same patented drop mechanism, so one adjustment procedure and one spare part cover the whole fleet. The variable to check door by door is length: the 367 is stocked at 16, 36, 38, 42 and 48 inches and gets cut to the leaf width, so measure each door rather than assuming the whole run is the same size. Finish is the other thing to confirm, since 367AA is the clear anodized housing.
9) What finish and model does 367AA refer to, and are there other 367 versions?
367AA is the clear anodized aluminum version of the Zero International 367 heavy-duty surface-mounted automatic door bottom. Zero's ANSI/BHMA listing for the 367 covers four finish variants: 367AA, 367BK, 367D and 367G. If a door schedule or a set of existing doors in the building calls out a 367 in a different finish, it is the same device and the same mechanism, just a different exposed housing.
How fast can I get the Zero International 367AA 16 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Zero International 367AA 16 come with a warranty?
Absolutely. The Zero International 367AA 16 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Zero International 367AA 16?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Zero International 367AA 16 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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