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

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