Horizontal Basic (HH-B)
CFM: 600 to 2,200
Horizontal with Return-Air Plenum (HH-R)
CFM: 600 to 2,200
Horizontal Deluxe (HH-D)
CFM: 600 to 2,200
Horizontal Flush (HH-F)
CFM: 600 - 2,200
Horizontal Deluxe with Bottom
Supply & Return (HH-E)
CFM: 600 to 2,200
Horizontal Bottom Return Air Plenum (HH-Q)
CFM: 600 to 2,200
Horizontal Cased Flush (CH-F)
CFM: 600 to 2,200