Halton also manufacture a range of apposed blade motorised heat and smoke dampers . BSD fire damper with permanent reusable fuse. Setting and testing from outside. Fire damper for mounting in plasterboard walls. Combined balancing and fire damper.
Many units have air flow measurement and control abilities.
They do not require fans or filters and are hence noiseless while requiring very little maintenance. These units can be supplied with built-in lighting. Century Air Conditioning Century manufacture high quality air conditioning products from small split systems to large capacity chillers. Quality control is exceptional because all products are manufactured 'under one roof' by the same company. The Century screw compressor does not vibrate like a piston compressor.