for sale azel dampers

[STRAUSS]

4 8" azel dampers brand new

[tomgeer]

you need to spell it Arzel. many people don't know what they are

[jps]

Could some one explain what these are? jps

[Glowmunkey]

Could some one explain what these are? jps

Dampers for a compressed air zone control system for forced hot air furnaces.

[proplumb]

how much for all of them?