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Fire resistance ceiling access hatches

Fire resistance, smoke control

Fire resistance ceiling access hatches
Security flaps Fire resistance Smoke control Bullet resistance Burglar resistance Acoustic performance Airtightness
wind load
watertightness 		Positive and negative pressure
Type Leaves Dimensions
width x height (mm) 		Flat Resistance class Designation Class Resistance class Insulation values Class  
THF 1
from 500  x  500
to 1,100  x  1,350
- T-90 RS - - up to
RW(C;Ctr)
= 42 (-1;-3) dB 		airtight up to 4
wind up to C5
up to 5,000 Pa

Explanation of the chart

  • The chart shows possible combinations of different performance requirements.
  • The standard performance requirement for each door type is shown in bold. The other performance requirements listed can be added to the relevant door type if required.
  • Please click on the relevant door type to view the detailed product descriptions.
  • Approvals, test certificates, technical drawings, tender documents and product brochures can be found under the relevant door type.
  • The range of dimensions may vary when combining different performance requirements.