Holyoake Curtain-type fire dampers are designed to restore the fire resistance of a wall or floor, in which a hole has been formed to permit the passage of air, either ducted or not, to enable an air distribution system to function. The arrangement of interlocking blades mounted in a guide channel frame minimizes space requirements, and facilitates ease of installation in ductwork.

All Holyoake Series IBD units carry up to a 4 HOUR rating, as determined by the following testing Authorities.

(Tested in New Zealand and Australia)

• BRANZ Assessment Report Certificate

IBD Damper mounted in a concrete wall or floor

• BRANZ Fire Test Certificate No.392

IBD Damper mounted in a plasterboard wall

(Certificates are available upon request)

The Holyoake HFS-R-146 is a fire and leakage rated Multi-leaf steel damper for the prevention of the spread of fire and/or smoke through ducted air systems, or between plenums. Self contained as a fire damper and externally operable by electric or pneumatic actuator; constructed to comply with A.S.1668.1, 1998 and A.S. 1682.1, 1990.

Fire Rating: Tested in accordance with A.S.1530.4,1990, integrity was maintained for a minimum of 4 hours. For purposes of the Australian and New Zealand Building Code they have a F.R.L./F.R.R. of na/240/–

Tests: BRANZ Fire Test Certificate No.390

HFS-R-146 mounted in a concrete wall or floor

BRANZ Fire Test Certificate No.391

HFS-R-146 mounted in a plasterboard wall

(Certificates are available upon request)

The Holyoake Series LR (Low Radiation) Fire Dampers are designed to impede the spread of fire within building compartments. The low leakage insulated damper blade assembly with blade tip sealing ring forms a solid barrier against flame, smoke and hot gasses. Complying with AS/NZS1668-1-1998 the LR Fire Damper is certified for a 4 hour rating in a masonry wall and a 2 hour rating in a plasterboard wall.