Pemko #4301NB Automatic Door Bottom, Aluminum with Double Brush Seal, .75" Drop

This heavy duty automatic door bottom has a drop-down seal which is lowered two nylon brush seals when the door is closed to prevent light, sound, fire, smoke, dust, and insects from seeping through the gap under doors. Designed to be surface mounted or semi-mortised applied to the face of the door. Available in a choice of aluminum anodized finishes and length is custom cut to size.

PRICED PER ITEM

To determine size needed, see How to Measure for an Automatic Door Bottom. Note, door bottom can be trimmed up to 2" in the field.

See tabs below for additional information
    • SKU
      PK4301CNBL|36
    • Market price:$132.60
      • save 10%
    • Starting price: Price: $119.34 per item
     

    This heavy duty automatic door bottom has a drop-down seal which is lowered two nylon brush seals when the door is closed to prevent light, sound, fire, smoke, dust, and insects from seeping through the gap under doors. Designed to be surface mounted or semi-mortised applied to the face of the door.

    Seal: Fitted with a double nylon brush seal. The brush conforms well to surface irregularities and can be used on uneven surfaces, such as tiles or a carpeted area. A metal bar prevents bristles from lowering too much and crimping.

    Mounting: This automatic door bottom can be installed in a surface mounted or semi-mortised application. For a semi-mortised application it requires a cut-out of .906” (W) x 1.781” (H).

    Installation: Installation instructions, screws and end plates provided. Screws are colored to coordinate with 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 5 year guarantee against defects in material and workmanship.
    Click here to view our full Warranty Policy.

    For a Narrower Version, see our Narrow Casing Automatic Door Bottom with Nylon and Neoprene Seal.

      • SKU
        PK4301CNBL|36
    • QuickShip
      No
    • Manufacturer
      Pemko Manufacturing
    • MPN
      4301NBL
    • Product Design
      • Mounting Type
        Surface Mounted, Semi-Mortised
      • Door Type
        Wooden Door
    • Dimensions
      • Casing Dimensions
        Casing measures .906" W x 1.781" (H). Door bottom can be trimmed in the field up to 2".
      • Length
        Custom Cut to Size
      • Drop Size
        Up to .75" Drop
      • Suggested Door Cut-Out
        For a semi-mortised application it requires a cut-out of .906” (W) x 1.781” (H).
      • Door Thickness
        1-3/4" Thick
    • Installation
      • Handing
        Non-Handed
      • Installation Screws
        Installation Screws Provided
      • Sizing
        To determine sizing required see 'How to Size an Automatic Door Bottom'
    • Finishes
      • Finish
        Clear Anodized Aluminum (US28), Dark Bronze Anodized Aluminum (313), Flat Black (US19)
    • Compliance Details
      • Compliance Details
        Air Infiltration Rated, ADA Compliant, BHMA Certified, Smoke Rated, Fire Rated, UL Classified, GreenGuard Gold Certified
      • ANSI Designation
        R3A334, R3A335, R3A344, R3A345
      • Warranty
        5 Year Limited Warranty

    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 jamb as the door is closing, forcing the drop-bar seal down against the floor / threshold. The plunger requires low "Feather Touch" closing force to actuate the drop-bar seal. The plunger 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!

    See also About Automatic Door Bottoms.

     

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    Product specs of pemko automatic door bottom 4301NB with nylon brush


    SHIPPING / PROCESSING TIME:


    This product ships directly from the manufacturer. 
    Please allow 2 - 3 weeks to ship
    • Domestic Shipping Fees- (Hawaii and Alaska not Included):
      • FREE SHIPPING on orders over $300.00 (excludes oversized and freight orders). 
      • There will be a flat $19.99 shipping and handling fee on orders under $300.00.
      • Oversize: Orders containing items sized 50" - 95" have an oversize surcharge of $49.99.
      • Freight Items: Orders containing items sized 96" - 108" have an oversize surcharge of $199.00.
      • Oversize Freight Items: Orders containing items sized 109" and above have an oversize surcharge of $299.99.
      • Orders totals above $2,000.00 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 committed to your satisfaction, as a courtesy, we may, at our discretion accept returns with a minimum 35% restock fee.
      • CLAIMS FOR SHORTAGE OR DAMAGE IN TRANSIT: All claims must be made within Seven (7) days of receipt of goods.
      • Weatherstripping products will not be considered for returns.
      • Item must be in new, re-saleable 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.