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Zero #339FS Door Bottom, Aluminum with Neoprene and Fire Stop Seal

Zero #339FS Door Bottom, Aluminum with Neoprene and Fire Stop Seal
Product Specs of Rubber Door Bottom 339FS Clear Anodized Aluminum Door Bottom Dark Bronze Anodized Aluminum Door Bottom

This Zero #339FS aluminum cased door bottom is surface mounted to fill gaps under doors and prevent infiltration of light, drafts, moisture, and dust. It combines an intumescent and neoprene seal to create a fire and smoke rated barrier which can restore lost fire ratings. Available in two anodized finishes and is custom cut to size.


Price: $12.69
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Made in USA
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This aluminum cased door bottom is great for large gaps under doors and can restore lost fire ratings. It is fitted with a neoprene and Zero's INTUMET™ intumescent material seal that will prevent infiltration of light, drafts, moisture, and dust and creates a fire and smoke barrier. Available in two anodized finishes and custom cut to size.

The casing of the door bottom is surface mounted to the face of the door. It extends outward .4" and has a height of 1". The neoprene seal has a height of 1.375", and can seal gaps up to 1.25". This product is approved for 20-minute fire rated wooden doors with excessive undercut up to 1.25". It is made of .094" thick aluminum and the highest quality materials to ensure long lasing usage.

Door Bottom is fitted with FS3003 INTUMET™ material. For more information, see Understanding Intumescent Fire Stop Material.

It is recommended that this product be used in conjunction with a Utility Threshold.

  • Smoke and fire rated
  • Utilizes Zero's INTUMET™ Technology
  • Solid neoprene seal
  • Fills large gaps, up to 1.25"
  • Aluminum anodized casing - Anodized to 204!
  • Custom cut to size

Installation instructions and screws provided. Screws are colored to blend unobtrusively into casing.

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 here to view our full Warranty Policy.

Click here to view all our INTUMET Fire Stop products.

Product Specs
Compliance Details

compliance details for z339fs

Click to view more information on this product's UL Fire Rating.

Shipping / Returns
  • Ship Time:
    • This product is custom made to your specifications, please allow 2-3 weeks to ship
    • *Similar or equivalent products from other manufacturers may be available to ship sooner. For expedited processing please contact our customer service department.
    • EXCEPTIONS: Gold Anodized Aluminum and Black Anodized Aluminum Products require 2-6 week processing time.
    • Ships via major carriers, such as UPS or FedEx Ground, with tracking information provided.
  • Domestic Shipping Fees- (Hawaii and Alaska not Included):
    • FREE SHIPPING on orders over $200.00 (excludes oversized and freight orders).
    • There will be a flat $19.99 shipping and handling fee on orders under $200.00.
    • Oversized Items: Items 86" and above have an oversize surcharge of $70.00
    • Freight Orders: Items 95" and above require freight shipment and have a shipping charge of $150.00
    • Orders totals above $1,500.00 will ship free, regardless of size.
  • Alaska and Hawaii, Canada, and International Shipping:
  • Returns:
    • This product is custom made and is not returnable.
    • We are commited to your satisfaction, as a courtesy, we may, at our discretion accept returns with a minimum 30% restock fee.
    • Weatherstripping products will not be considered for returns.
    • Item must be in new, resaleable condition.
    • Please call or email us to receive an RMA number before returning. No returns will be processed without an RMA number.
    • Return shipping is customer's responsibility. A return address will be provided with RMA#.
    • If you are shipping via USPS (not recommended) do NOT require signature as we will not be able to pick up your package from local post office facility.
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