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Zero 323AA Sill Protection Automatic Door Bottom with Neoprene Insert - Mortised - Clear Anodized Aluminum
Model: ZER-323AA
Zero 323AA Light-Duty Mortised Automatic Door Bottom
The patented automatic door bottom technology from Zero ensures an efficient seal against the floor or saddle. As the door is closed, the...
Zero International
Starting at
$95.14
Zero 364AA Sill Protection Automatic Door Bottom with Solid Neoprene Insert - Mortised - Heavy Duty - Clear Anodized Aluminum
The patented automatic door bottom technology from Zero ensures an efficient seal against the floor or saddle. As the door is closed, the adjustable plunger is compressed against the door frame, activating a concealed flat spring mechanism. Zero door bottoms are designed to block penetration by air, sound, smoke, and flames.
- Sill Protection Automatic Door Bottom
- Mount: Mortised
- Heavy Duty
- Insert: Solid Neoprene
- Finish: Clear Anodized Aluminum
- Maximum effective drop: 1"
- Rated for up to "B" label (1-1/2 hrs.)
- Smoke Seal Rated
- Sound Rated
- Matching #364 End Caps are sold separately
- Supplied with solid neoprene extrusion, self-extinguishing, under MIL R6855 Type II Class 40 oil resistant
- Rated for 5 million cycles
- ZERO’s patented automatic door bottom technology ensures a tight seal against the floor or saddle. As the door is closed, an adjustable "plunger" is compressed against the door frame, activating a concealed flat spring mechanism. This mechanism drops the seal smoothly from the housing in a scissor-like motion as illustrated below. The door seal compresses tightly even on uneven surfaces and retracts automatically when the door is opened.
- All ZERO automatic door bottoms function the same way. The concealed spring mechanism causes the insert seal to activate on the hinge side first. It prevents the seal from dragging along the floor or threshold while the door is being closed to avoid door hang-up or closing delay.
Manufacturer Resources
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
Zero International 364AA 36 – Frequently Asked Questions
1) What is the Zero 364AA automatic door bottom used for?
The Zero 364AA provides automatic sealing at the door bottom when closed. The heavy-duty full mortise design installs into the door edge for weatherproofing and sound control.
2) What door types work with this automatic door bottom?
Compatible with wood and hollow metal doors. Requires sufficient door thickness for full mortise installation. Verify door construction can accommodate the mortise depth before ordering.
3) Does door handing matter for installation?
Automatic door bottoms are typically universal for left or right hand doors. The mechanism activates based on door position regardless of swing direction.
4) What finish options are available?
Check product specifications for available finishes. Zero typically offers multiple finish options to match door hardware and frame finishes.
5) What is the duty rating for this door bottom?
Listed as heavy-duty grade suitable for high-traffic commercial applications. The full mortise design provides superior durability compared to surface-mounted units.
6) Does this meet building code requirements?
Verify local code compliance for your specific application. Automatic door bottoms help meet weatherproofing and energy code requirements when properly installed.
7) Are replacement parts available?
Zero typically provides replacement seals and internal components. Contact us for specific part availability for the 364AA model.
8) What tools are needed for installation?
Requires mortising tools, drill, and basic hand tools. Full mortise installation needs precise cutting. Use manufacturer template for accurate placement.
9) How do you adjust the seal drop?
Most automatic door bottoms include adjustment screws to control seal extension. Follow manufacturer instructions for proper adjustment to ensure complete floor contact.
10) What other Zero door bottom models are available?
Zero offers various automatic door bottom models with different mounting styles and duty ratings. Browse our Zero International selection for alternatives.
11) Will this work with uneven floors?
Automatic door bottoms work best with level floors. Minor irregularities may be accommodated through adjustment. Significant floor variations may require floor preparation.
12) What are the critical measurements needed?
Measure door width, thickness, and bottom rail dimensions. Check floor clearance and verify mortise depth requirements against door construction before ordering.
How fast can I get the Zero International 364AA 36 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 364AA 36 come with a warranty?
Absolutely. The Zero International 364AA 36 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 364AA 36?
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 364AA 36 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.