Fireplace damper indicator

Fireplace damper release mechanism

Fireplace damper system viewer, opener and closer

Fireplace power cap

Flexible disk damper

Flue throttle

Guillotine damper

Guillotine dampers with blade sealing means accommodative of the

Heating device

Isolating damper for closing a duct

Motorized insulated damper assembly for furnace systems

Operating mechanism for fireplace damper

Positive damper adjustment device and methods of making and usin

Remote fireplace damper control

Sector control wood-type fuel burning furnace

Self-regulating open fireplace

Stack damper valve

Vent damper

Vent damper

Vent damper drive