Designs and manufactures HVAC and fire safety components from a 155,000 sq ft facility in Thetford, established in 1962 as the first international subsidiary of the TROX Group. The fire damper range is declared to EN 15650, fire tested to EN 1366-2 at 300 Pa and 500 Pa and classified up to EI 120 (ve, ho, i-o) S to EN 13501-3, CE marked under the CPR with a Declaration of Performance.