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Zero International 369AA-42

Special Order Heavy Duty Mortise Automatic Door Bottom

Quick Product Details

  • Fully Mortised
  • Adjustable hex nut allows the door bottom to drop 3/8-7/8"
  • Tested to 5 million cycles!
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Special Order non-stock item Requires 6 week lead time

SKU: 369AA-42

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How do Automatic Door Bottoms work? As the door is closed, the adjustable plunger is compressed against the door frame, activating a concealed flat spring mechanism. This mechanism drops the seal smoothly from the housing in a scissor-like motion. The door seal compresses on either even or uneven surfaces and retracts automatically when the door is opened

Because this is not a stock item we must order it specifically for you and we will be unable to accept a return unless the item is defective as determined by the factory it was bought from.

  • Special Order
  • FREE Shipping

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Choose Length:

42 42" - 3.5FT (Special Order)


Available Options: Choose Options Above

  • Length:

    • 42" - 3.5FT (Special Order)

Product at A Glance

Non-Stock Special Order with 8-10 week lead time.
Installation Type Mortise
Material Finish Clear Anodized Aluminum
Door Size Up to 42" Wide, can be trimmed up to 2" in the field
Door Type For wood doors

More Info

Zero’s patented automatic door bottom technology ensures
an efficient seal against the floor or saddle. Zero door bottoms are designed to
block penetration by air, sound, smoke and flames.
All Zero automatic door bottoms function the same way. The concealed
spring mechanism causes the insert seal to activate on the hinge side first.
It prevents the seal from dragging along the floor or threshold while the
door is being closed to avoid door hang-up or closing delay.

The Zero 369 features a "double bulb" seal to form a better seal with uneven or rough floors, and is used in many doors where sound transmission is an issue. Hear the difference!



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