Belimo B212B+TFRB24-SR-S Belimo CCV,0.5",2 Way,3 Cv,w/ Spring Return,24V,Modulating,SW B212B+TFRB24-SR-S
Belimo B212+TFRB24-SR-S Belimo CCV,0.5",2 Way,3 Cv,w/ Spring Return,24V,Modulating,SW B212+TFRB24-SR-S