IS8520si Automatic Door Seal

Automatic door bottom seals incorporate a spring-
loaded mechanism that automatically lowers to seal the gap as the door closes and retracts as it is opened. They are available in either face-fixed,
semi-rebated or fully mortised options.

A heavy duty, automatic door bottom seal designed for high-
performance acoustic door systems. This seal can be face-fixed, semi-rebated or 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, in a parallel motion, as soon as the door is opened.
Pressure against the door jamb on the adjustable brass strike
button operates the seal automatically.

Face-fixed: The seal is fixed to the face of the door bottom using the
long fixing screws provided. (See detailed fitting instructions). A set
of glass-filled, reinforced nylon end plates ensure longevity of the
seal mechanism.

Semi-rebated: When the seal is to be semi-rebated, the seal
is mounted into a stepped rebate: a 44mm deep x 21mm wide
machined groove on the side of the door to which the seal will be
positioned. The seal can be screw-fixed into position and fitted with
the cast-aluminium end plates provided.

Fully-mortised: When the seal is to be fully-mortised, the seal is
mounted into a 44mm deep x 21mm wide machined groove and
screwfixed back into the door stiles via the cast-aluminium end
plates, holding the seal in place.

Gap size
• Min. 6mm / max. 15mm
Standard lengths
• 420mm
• 520mm
• 610mm
• 820mm
• 920mm
• 1070mm
• 1220mm
• 1500mm
(*Longer lengths available to special order)

IS8520si maximum allowable cut-back sizes:
• 420mm seal cuts to 275mm
• 520mm seal cuts to 420mm
• 610mm seal cuts to 520mm
• 820mm seal cuts to 610mm
• 920mm seal cuts to 820mm
• 1070mm seal cuts to 920mm
• 1220mm seal cuts to 1070mm
• 1500mm seal cuts to 1220mm
(*Seals can be cut on site for exact dimension)

Standard colours
• Silver anodised aluminium with grey reinforced nylon or cast-
aluminium end plates and grey silicone gasket. (Black reinforced
nylon or cast aluminium end plates and black silicone gaskets also
available upon request.)

Approval/s
• Fire tested to AS1530 Part 4 in accordance with AS1905 Part 1
• Certifications GVYI.R26629, GVWZ.R26629, GVWZ7.R26629
• Medium temperature smoke leakage approvals to AS1530 Part 7,
compliant with AS6905 on proprietary door assemblies
• Conforms with BCA Specification C3.4 smoke sealing requirements
• Acoustically tested in accordance with AS1191, IS0140.3
and ISO10140-2
• Durability tests demonstrating over 1,000,000 open & close cycles