If the damper is closed approximately 50 % of the time.
Caution: In applications where the humidity level is unusually elevated, or where there are extremely high levels of dust and dirt particles, we recommend that the damper linkage and bearing system should be cleaned once a year. This can be done easily with the use of a domestic strength steam cleaner. The loosened dirt and water droplets can then be blown out with compressed air.
Leakage Class 1A at 1 in. w.g. (0.25 kPa) static pressure differential. Standard air leakage data is certified under the AMCA Certified Ratings Program.
TAMCO's thermally insulated blades are constructed using an aluminum shell, injected with polyurethane foam.
Optimum placement of three thermal breaks along the blades isolates the warm and cold sides of the damper.
Non-metallic blade and side seals minimize thermal bridging across blade surfaces.
These design features combine to control the forces of radiation, convection, and infiltration. This ensures blade insulating effectiveness.
Comes with extremely flexible silicone side seals and EPDM blade gaskets as standard.
Constructed with all of the maintenance-free bearing and linkage components of other quality TAMCO products. (Caution: Never use any lubricants, such as grease or silicone on TAMCO dampers.)