

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
Rinnai FSFS4SP is a 4-inch diameter firestop/flat flashing intended for use with the venting system of Rinnai R98i Series tankless water heaters. Manufactured by ProTech (FasNSeal line) from AL29-4C superferritic stainless steel, it offers resistance to chloride ion pitting, crevice corrosion, and stress corrosion cracking in oxidizing and moderately reducing environments. The component uses a built-in mechanical locking band and gasket for air- and water-tight push-fit joints and can be disassembled for inspection or rerouting.
4-inch round firestop/flat flashing; AL29-4C stainless steel construction; integrated locking band and gasket; designed for Rinnai R98i Series venting
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!