IS8100SI bottom door seal
IS8100SI bottom door seal IS8100SI bottom door seal IS8100SI bottom door seal

A heavy duty, automatic door bottom seal which is fully-mortised into the bottom edge of single action doors. The seal has a spring loaded mechanism which lifts the seal clear of the floor as soon as the door is opened. Pressure against the door jamb on the adjustable brass strike button operates the seal automatically.

The seal is mounted into a 43mm deep x 21mm wide machined groove along the underside of the door. The seal is screw-fixed into position through the mounting flanges. Aesthetic, rigid nylon push-fit end plates (or screw-fixed cast aluminium end plates) ensure longevity of the seal mechanism.

The seal contains a high efficiency mechanism to assist with the closing force requirements detailed in AS 1428.1 (Design for Access and Mobility).

Seal sizes (the seal is designed to be cut on site by the installer to match the door dimension)

  • 450mm seal cuts to 275mm 
  • 610mm seal cuts to 450mm 
  • 820mm seal cuts to 610mm 
  • 920mm seal cuts to 610mm 
  • 1070mm seal cuts to 920mm 
  • 1220mm seal cuts to 1070mm 
  • 1500mm seal cuts to 1220mm 

Standard colours:

  • Silver anodised aluminium with grey end plates (or cast aluminium end plates) and grey silicone gasket 
  • Bronze anodised aluminium with black end plates (or cast alumimium end plates) and black silicone gasket 


  • Fire tested to AS 1530 Part 4 
  • Conforms to BCA Specification C3.4 for smoke doors 
  • Acoustic ratings to AS 1191 and ISO 140.3 
  • Durability tests demonstrating over 1,000,000 open and close cycles