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Model PAL
The Schebler model PAL vent and exhaust system is tested and listed by Underwriters Laboratories Inc. (UL) under file number MH10056 for UL 1738 and ULC S636-95 Vent
The Model PAL is a modular double wall prefabricated exhaust system with 1” air gap for use in venting appliances that require a positive, neutral or negative draft exhaust system. Sections are provided in lightweight, easy-to-handle lengths. Connections are sealed with pressure tight draw bands and high temperature sealant. Straight sections, variable length joints, tees, elbows and support devices are offered, allowing a complete exhaust system to be assembled from standard components.
The Model PAL is a double wall special stainless steel venting system for gas fired appliances listed as Category II, III, and IV with a maximum flue gas temperature of 550 deg. F, and 40” W.C. positive pressure. Gas vent –BH, Class I/Class II-245 deg. C. Model PAL is also suitable for other applications that call for an AL 29-4C vent.
The Model PAL vent system is available in even and odd diameters ranging from 5” to 48”. A complete line of straight sections, variable lengths, tee’s, elbows, rain caps, roof penetration components and support members are offered. In addition to the standard components virtually any conceivable fitting is available as a special order item.
The Model PAL is available in a variety of materials allowing the proper material selection for your specific application. The standard product features a AL 29-4C stainless steel liner and an aluminized steel outer shell.
For exterior installations which are not easily accessible for periodic painting, you should consider a 304SS outer shell which will require no maintenance.
The standard material thickness for liners is 20 ga. (.035”); for shells it is 22 ga. (.034”). Fittings larger than 24” diameter utilize 18 ga. (.048”) on the shell. Pipe diameters larger than 36” utilize 18 ga. on the liners and the shells.
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