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1. The wood fill door: Model 305-FA has a 20” x 20” door with double latch safety.
2. The automatic forced air fan/damper system is on the wood door. It is activated by the
indoor thermostat. Your thermostat can be adjusted to various temperature settings.
The damper unit is actually a double damper system, in that the inside damper drops
shut when the fan is off.
Forced Air
Automatic Damper
Wood Door
Summary of Contents for Bear Cub 305-FA Series
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