Automatic Door Bottoms - Surface & Semi-Mortice

Product Code: 4301_ & 4131_
Automatic Door Bottoms - Surface & Semi-Mortice
  • Description and Uses
  • Installation Sheets & Templates

Automatic Door Bottoms - Surface & Semi-Mortice

About Door Bottoms (DB)

Door bottom seals consist of a variety of solutions for sealing a door to the threshold or floor surface.

About Automatic Door Bottoms

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 or threshold.
  • When the plunger contacts the jamb, the drop bar seal actuates from the hinge side first allowing multiple compression points.
  • The plunger requires low "FeatherTouch" closing force to actuate the drop bar seal. The "L" at the end of all product numbers stands for Low closing force.
  • End plates are provided for all mounting applications.
  • Available in sizes ranging from 457mm to 1829mm
  • All Pemko automatic door bottoms are provided net length.
  • Stock length automatic door bottoms can be trimmed as much as 50mm

Specify if the Automatic Door Bottom is for a semi-mortice application so that shorter screws can be provided

Drop-Bar Seal Actuation

The drop bar mechanism prevents the seal from skidding along the floor/threshold while the door is being closed.

Click here and rotate the image to view the activation sequence.

Important Drop Bar Information

Drop seals of all types are designed to close a uniform size gap. Pemko drop seals can seal up to 19mm gaps, provided the gap is consistent. Gaps that start at less than 19mm and then grow cannot be closed. The drop seal utilizes a straight aluminum extrusion so it cannot close an inconsistent gap.

4301_NBL
AVAILABLE FINISHES: C, D

4301_PKL
AVAILABLE FINISHES: C, D

Alternate Insert For 4301

4131_NBL
AVAILABLE FINISHES: C, D, SN

4131_RL
AVAILABLE FINISHES: BDG, C, D, SN

Alternate Insert For 4131

Finishes

BDG (Bright Dip Gold Anodized) C (Clear Anodized) D (Dark Bronze Anodized) SN (Satin Nickel Anodized)

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Devizes
Wiltshire
SN10 2RT

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