Sound and air will leak through the middle of double doors if the proper astragal seals are not installed. The PDS Astragal installs to the surface of the inactive door with a rubber seal included that installs between the two doors. This design, when used in conjunction with our other door seal products, will provide a zero loss seal for the center vertical space between double doors. The main piece measures 1/8" thick and is 2" wide with a standard size of 80". The PDS Astragal is a galvanneal steel for easy painting to match any painted door.
Measure the distance between the bottom of the slab, or top of the threshold, and the top horizontal stop. The PDS Astragal must fit tight against the top horizontal stop and bottom of the door to ensure a perfect seal. The PDS Astragal is 10 gauge steel so it can be trimmed on site with the proper tools.
Each PDS Astragal ships with the required fasteners along with full installation instructions from the manufacturer. A brief description of the installation can be found below.
The PDS Astragal arrives pre-drilled with the required fasteners. It is recommended to have the doors tops installed before installing the astragal piece. With both door closed, center the PDS Astragal over the center vertical space. Mark each screw location with a pencil and begin fastening the PDS Astragal to the slab. The second component is a rubber seal that is attached with a peel and stick application to the side of the inactive door slab. The bubble side of the rubber should be positioned to the astragal piece without coming in contact with the astragal.
The PDS Astragal has been tested to show zero loss when installed as a seal for the center vertical space between double doors. The concept behind the PDS Astragal has two parts. First, the mass of the seal fully covers the center vertical gap, and second, the rubber installed between the double door slabs creates a dead air space. The final rating of the PDS Astragal will depend on the performance of the door slabs.
PDS Astragal Product Specs PDF 68KB
|PDS Astragal Specs|
||2" wide x 1/8" thick
||84" standard size, cut to spec by manufacturer
||Gray primer galvanneal steel (easily painted) or dark bronze
||Tested to show zero loss in performance for doors up to STC 56
||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