PSS
Prefabricated Shaft System
36" Diameter
Integral
Up To AvailableMORE INFO
Subduct Taps
Double-wall
UL-listed
Construction The PSS Prefabricated Shaft System from LFSystems is a factory fabricated duct system designed to be used for multi-story exhaust systems where a fire-rated shaft is required. The PSS is a single-wall duct and the PSS-Z3 is a double-wall duct with integrated fire-rated shaft. Optional low-profile subduct risers can be integrated in the duct from the factory, thus eliminating the need for for fire/smoke dampers. The modular design assembles with a simple V-band for quick installation with no welding required. The PSS is ideal for clothes dryers, bathroom and kitchen exhaust.
The double-wall option features a UL/ULC classified 2-hour fire rating, eliminating the need for separate fire-rated wall and field fabricated duct work. It also only requires a single inspection, saving time and money on-site. The PSS is made in the USA and includes a limited lifetime warranty with engineered technical support.
