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The DuraVent FSWTI06 FasNSeal Insulated Wall Thimble is made from 29-4C stainless steel. It features a mechanical locking band and triple-lipped directional gaskets. The design includes an air space between the inner and outer walls, which reduces the clearance to combustibles while providing a heat shield. This wall thimble is compatible with Category II, III, and IV gas burning appliances.
Ideal for venting applications, this wall thimble enhances safety by maintaining proper clearances for gas appliances.
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