Devco PI391 Electrical Utility Box Extension Ring 4 inches voomi_id_35489 Its electronically commutated motor technology

Its electronically commutated motor technology ensures variable speed adjustments that align with system demand

Differential: 20 deg F

This unloader valve is crafted to withstand rigorous use

making it compatible with most residential and commercial HVAC systems

Valve Service 7/8 45 Degrees

Devco PI391 Electrical Utility Box Extension Ring 4 inches voomi_id_35489 Its electronically commutated motor technologyProduct Description The Devco PI391 is an Electrical Utility Box Extension Ring designed for various electrical applications. This extension ring measures four inches in length and two hundred one point seven inches in width, making it suitable for standard utility box installations. With a depth of one and one half inches, it provides ample capacity of twenty one cubic inches for wiring and connection purposes. Knockout sizes: three fourths inches