and Day & Night

This 500-foot reel includes a built-in braided ripcord for fast stripping and sequential footage markings to eliminate measurement guesswork during long pulls

Using it on normally open hardware may result in improper plunger seating or coil burnout

Note that both upper and lower thermostats should be set to the same temperature to maintain a uniform tank profile

EWC Controls PRD 10" Pressure Regulating Damper Els PW 17895 and Day & NightEWC Controls PRD 10" Pressure Regulating Damper Made in USA. Model PRD RD pressure regulating damper is a single blade, round variation of a barometric relief damper. This is the simplest, most economical way of bypassing excess static pressure in multi zone applications. Resistance is controlled by offsetting the arm and adjusting the weights. The arm can be inserted into either side of the damper for added versatility.