The transfer register box (TRB) was designed exclusively for use with WhisperValue DC fan and fan/light combinations. It provides room-to-room air distribution with ductless heat pumps.
Wall mount application fits in a 2 x 4 stud bay|Single family, manufactured housing, multi-family hospitality, assisted living, student housing renovation, remodeling construction|Perfect for room to room powered circulation in multi-family projects with ductless heat pumps|Powered 60 cfm transfer at less than 0.3 sones|No need for a radiation damper like on jump ducts|Works with standard size HVAC registers 4 x 10 in HVAC supply grille
Panasonic Transfer Register Box, 4 in Dia, 12-3/4 in Width, 26 ga, Steel, Galvanized