Site Wide Discounts

  • 5% Off
    $500+ Purchase
  • 10% Off
    $1000+ Purchase
  • 15% Off
    $2000+ Purchase

Site Wide Discounts

  • 5% Off
    $500+ Purchase
  • 10% Off
    $1000+ Purchase
  • 15% Off
    $2000+ Purchase
  • ADB Mortised

  • ADB Surface

    Color Options

Add to Cart Or Add To Your Project

  • Pricing based on 36" width or less
  • Surface mounted, semi-mortised, or fully mortised automatic door bottom
  • Lead Time: 4-9 days

PRODUCT USE

The largest opening to seal on a door is between the bottom of the door and the floor or threshold below. The most effective way to isolate this opening is with the ADB Mortised or ADB Surface. The ADB stands for automatic door bottom with automatic referring to how the door bottom will raise or lower the rubber seal as the door opens or closes. The metal plunger on one side of the ADB comes in contact with the door jamb as the door opens and closes. This function will keep the rubber seal from dragging across the floor, prolonging the life of the rubber and allowing the door to open and close smoothly without additional closing force.

What separates our ADB from others available is the uniform seal pressure across the entire bottom of the door along with the double rubber seal. The double rubber seal creates a 3/8" dead air space increasing performance significantly over solid rubber or foam seals.

There are two styles of the ADB, the fully mortised (ADB Mortised) and surface mounted or semi-mortised (ADB Surface). The performance and function of these two styles are the same, only the installation and appearance are different.

MEASURING

Both the ADB Mortised and ADB Surface can be trimmed up to 1” in the field. A stock uncut 36” ADB can be cut up to 3" in the field.

* Measure carefully. Custom cut components cannot be returned. All returnable door seal products require a 25% restock fee.

ADB MORTISED

Measure the width of the door slab. This measurement is the width you should order for your ADB Mortised. The same measurement will be used for the ADB Surface if you plan to semi-mortise the ADB Surface into the door.

ADB SURFACE

Measure the distance between the door stops and subtract 1/8". This measurement is the width you should order for your ADB Surface if installed as a surface mounted door bottom.

INSTALLATION

Each ADB ships with the required fasteners along with full installation instructions from the manufacturer. A brief description of each installation can be found below.

ADB MORTISED

The ADB Mortised is installed in the center of the bottom of the door. When installed, it is not visible from either side of the door and only a small amount of rubber drops beneath the door, typically around 1/4" to 3/8". Several small screws are provided to attach the ADB Mortised into the bottom of the door slab.

ADB SURFACE

The ADB Surface is installed on the surface of the door slab between the door stops. You can also semi-mortise the ADB Surface by recessing the door bottom into the door with one side of the door bottom flush with the door slab. When installed, it will be visible from one side of the door with the rubber dropping between 1/4" to 3/8". Three large screws are provided to attach the ADB Surface into the slab.

PERFORMANCE

Our independent sound tests have shown the style of rubber seal on the ADB to achieve zero loss. Other styles we tested, including the thick rounded rubber, the waffle pattern rubber, and silicone sponge rubber, performed well, but ultimately created a loss of 1-2 STC points for the door overall when installed correctly.

PRODUCT SPECS

ADB Mortised Product Specs PDF 91KB

ADB Mortised Specs
Dimensions 9/16" thick x 1-3/8" tall
Length Standard 36", available range of 12" to 60"
Finish Clear aluminum
STC Rating Tested to show zero loss in performance for doors up to STC 56
Other Ratings UL10C for fire, UL1784 for smoke, BHMA A156.22, ASTM E-283 for air infiltration, ASTM E-90-97 and ASTM EI408-91 for sound control

ADB Surface Product Specs PDF 84KB

ADB Surface Specs
Dimensions 9/16" thick x 1-7/8" tall
Length Standard 36", available range of 12" to 60"
Finish Clear aluminum or dark bronze
STC Rating Tested to show zero loss in performance for doors up to STC 56
Other Ratings UL10C for fire, UL1784 for smoke, BHMA A156.22, ASTM E-283 for air infiltration, ASTM E-90-97 and ASTM EI408-91 for sound control

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