Pemko 4301_NBL Surface Applied or Semi-Mortise Automatic Door Bottom with Dual Nylon Brush Inserts

Usually Ships: 10-15 Business Days
  • Surface and Semi-Mortise
  • Air Infiltration Tested
  • Fire-Rated and Smoke Tested

Available Options:

Clear

Pemko 4301_NBL Surface Applied or Semi-Mortise Automatic Door Bottom with Dual Nylon Brush Inserts

The 4301 Series Non-Handed, Semi-Mortise and Full Surface Automatic Door Bottom is a heavy-duty solution for preventing air, light, sound, fire, smoke, dust, and moisture from entering the gap under doors. It features a drop-down seal that is lowered when the door is closed. It can be surface mounted or semi-mortised applied to the face of the door.

  • BHMA logo represents products that meet the requirements of ANSI/BHMA 156.22-2012 for latching force and air infiltration.
  • Smoother action positive seal mechanism.
  • All Pemko automatic door bottoms consist of an aluminum case which surrounds a movable drop-bar seal.
  • The drop-bar seal is actuated by a plunger which contacts the jamb as the door is closing, forcing the drop-bar seal down against the floor/threshold.
  • All Pemko automatic door bottoms are provided at NET length.
  • All Pemko automatic door bottoms can be trimmed down by as much as 2″ in the field (stock lengths only).
  • The drop-bar seal actuation mechanism causes the drop-bar seal to always actuate on the hinge side first.
  • This feature prevents the seal from skidding along the floor / threhold while the door is being closed.
  • Door hang-up will not occur.
  • This automatic door bottom is supplied with a Nylon Brush (“NB”) insert
  • WIDTH: 29/32” (23.0 mm)
  • HEIGHT: 1-25/32” (45.2 mm)

Finishes

  • 4301CNBL: C – Clear Anodized Aluminum with Gray Nylon Brush insert
  • 4301BSPNBL: BSP – Black Suede Powder Coat Aluminum with Black Nylon Brush insert
  • 4301DNBL: D – Dark Bronze Anodized Aluminum with Black Nylon Brush insert

Ratings

  •  Air Infiltration Tested
  •  BHMA Certified
  •  Smoke Tested – UL1784
  •  Fire Rated – UL10C – Positive Pressure
  •  Underwriters Laboratory 4L10
  •  GREENGUARD Gold Certified
Brand

Length

36", 48"

Finishes

C – Clear Anodized Aluminum, D – Dark Bronze Anodized Aluminum, BSP Black Suede Powder Coat

Fire Rating

UL/cUL listed

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Pemko 4301_NBL Surface Applied or Semi-Mortise Automatic Door Bottom with Dual Nylon Brush Inserts