ProTech Systems, Inc. has introduced the FasNSeal special gas vent, a silicone-free vent system for Category II, III and IV heating appliances. FasNSeal features built-in gaskets designed for high efficiency gas and oil heaters where cool flue gases are vented under pressure. The FasNSeal parts simply slide together, the FasClamps are tightened, and the appliance can be fired up immediately. The system is made up of AL20-4C super-ferritic stainless steel, with a precision TIG-welded butt seam, and factory built-in replaceable gaskets and locking band. Available in 3" to 16" diameters.ProTech Systems, Inc.
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