Astroflame AFASDBX DB Plus Seal

An automatic door bottom seal which is spring loaded to lift clear of the floor as soon as the door leaf is opened by a few millimetres.
An acoustically designed seal for rebated applications. mounted into a 15mm x 28mm groove that has been morticed into the bottom edge of the door.
It is operated automatically by pressure against the door jamb on its adjusting screw and seals when the door closes and retracts automatically when the door is opened.
Can be fitted inside (lock side using bumper provided) or outside of the door (non lock side).

• Tested for durability 200,000 cycles completed without failure for fire rated smoke doors. 
  14mm maximum drop, Graduated Scissor action (seal drops on hinge side before lock side).
• Seal easily removed to prevent damage during installation.
• This seal is available in many sizes, please choose from our options for your required length.

For data sheet please CLICK HERE