Compression outlet accommodates 1/4 in. copper, polybutylene or polyethylene supply to the ice maker 2 in. extended tailpiece will accept a 1/2 in. copper or a 1/2 in. FIP adapter to PVC, polybutylene supplies Molded ears nail to stud of walls from 3/16 in. paneling to 5/8 in. drywall Eliminates exposed piping Saves time for installer, seals to keep out rodents and vermin Solid, one-piece plastic box is leak, scratch, rust and shatter proof. Dimensions: Box - 6 in. W x 6 in. H x 3-3/8 in. D, Faceplate - 8-1/4 in. W x 8-1/4 in. H Valve complies with requirements of NSF 61, Section 9. Less valve