20 flex duct for sale, brand-new and used.

INNOVAIR FLEX (INNOVAIRFLEX).....SYSTEM SENSOR.....4 WIRE DUCT SMOKE DETECTOR.....MODEL D4120... ..MAKE YOUR OFFER AND SAVE MONEY

4-wire photoelectric low-flow duct smoke detector The InnovairFlex™ Series are the only duct smoke detectors flexible enough to fit configurations from square to rectangular and everything in between. The InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet pe

Speedi-Vent SV-485 SB HVAC Install Kit

Hardcast Foil- Grip 1402 Foil-Grip is a pressure sensitive duct joint and general purpose rolled sealant. Foil-Grip provides an instant water resistant grip to most surfaces including sheet metal, duct board, flex duct, PVC coated duct, and duct wrap vapor barriers. Foil-Grip is suitable for subgrade application on PVC coated du

used once, some minor wear & tears on the ends. the overall length is very clean.