Zero #323, Automatic Door Bottom, Mortised and Handed with Neoprene Seal, .375" Drop
This Zero International #323, automatic door bottom has a strong, durable aluminum casing that has a handed and mortised application. Fitted with a high quality, extruded neoprene seal insert, this door bottom effectively prevents the infiltration of light, sound, drafts, dirt, and smoke. This product is fire and smoke rated and is available in aluminum mill finish and length is custom cut to size.
PRICED PER ITEM
To determine length needed, see How to Measure for an Automatic Door Bottom. Not sure what handing is required for your door? See How to Determine Handing / Swing of Door. This can be cut an additional 2" in the field.
This automatic door bottom is designed to be fully mortised within the hollow interior of the door. The high quality, durable, neoprene seal is housed within a strong, .062” thick, aluminum casing.
Its mortised application allows the door to maintain a clean, unobtrusive appearance, making it an optimal choice for high-end designer doors and luxury hotels and condos.
How it works: The high quality automatic mechanism consists of an aluminum case which surrounds a moveable drop-bar seal. The drop-bar seal is actuated by a plunger which contacts the door frame jamb as the door is closing, forcing the drop-bar seal down against the floor / threshold. The plunger requires low closing force to actuate the drop-bar seal.
The mechanism causes the seal to always actuate on the hinge side first, which prevents the seal from skidding along the floor/threshold while the door is being closed. Door hang-up will not occur! Choose the correct swing direction from the drop-down box above. This door bottom is rated for 5 million cycles.
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.
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
Check out our other Mortised Automatic Door Bottoms.
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QuickShipNo
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ManufacturerZero International
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MPN323
- Product Design
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Seal TypeNeoprene Rubber Seal
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Mounting TypeFully Mortised
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Door TypeWooden Door
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- Dimensions
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Casing DimensionsThe aluminum casing measures .595" wide, with a height of 1.458". This automatic door bottom has a .375” foot that extends along the underside of the door.
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LengthCustom Cut to Size
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Drop SizeUp to .75" Drop
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Suggested Door Cut-Out5/8" x 1.5" H
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Door Thickness1-3/4" Thick, 1-3/8" Thick
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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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- Finishes
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FinishMill Finish Aluminum (US27)
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- Compliance Details
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Compliance DetailsFire Rated, BHMA Certified
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ANSI DesignationR3B3241
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Warranty1 Year Limited Warranty
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