PowerStack is a state-of-the-art twin-walled exhaust system designed to convey power generator exhaust.
| Material | Inner Liner: 316L-PCM Stainless Steel Outer Case: 304 Stainless Steel  | 
| Insulation | Insulfrax 8.14 lbs/cu.ft (128 kg/m3) | 
| Max. Pressure | 60 inWG (14945 Pa) | 
| Max. Temperature | 1400°F (760°C) per UL2561 | 
| Warranty | 1-Year Warranty / Extended 15-Year Warranty  5-Year Performance and Leakage Guarantee  | 
| Listing Certification | UL 103, Standard for Factory-Built Chimneys for Residential Type and Building Heating Appliances.  UL 2561, Standard for 1400°F Chimneys ULC/ORD-C959, Standard for 540° and 760°C Industrial Chimney  | 
