A.O. Smith & A.O. Smith 100208806 FLU DAMPER W/ACT.

This is a Smith & Smith 100208407 blocked flu switch. This switch is used to isolate a section of a building during an outbreak of the flu.

"BAROMETRIC DAMPER 7"""

This is an 8" damper drive. It is used to adjust the air pressure in a tire.

"6"" DAMPER DRIVE"A* This is a BLOWER PROVER SWITCH *Smith!Your equipment has never been more important than it is now as you strive to reach your goals, and a main component of that equipment is...

This is an A.O. Smith & A.O. Smith 100141552 "6"" VENT DAMPER ASSEMBLY. This part is for a furnace or air conditioner. This part is used to control the flow of air.