White-Rodgers 21D64-5PK HSI R-410A you can set 15-minute switching
Baker’s notes & crumb story
Description
White Rodgers 21D64 5PK HSI R 410A you can set 15 minute switching you can set 15 minute switching intervals across a true clock face this unit features 1 2" MNPT connections and is built to withstand extreme thermal cycling and pressure fluctuations