Wall thimble is used for horizontal exhaust venting through the outside wall
Wall Thimble is 10" x 10" and has an adjustable width from 4" to 7"
Rated AL29-4C and is approved for Category I (vertical only), II, III & IV applications
Contains a built-in, fail-safe gasket and locking band connection
This is a 3" stainless steel category II/III adjustable wall thimble set. The flashing is 10" x 10" and the thimble adjusts from 4" to 7"€ Stainless steel category II/III€ UL approved