Specifications Exhaust Capacity: 1200 int./1200 ext./1500 ext. CFM Electrical Requirements: 120VAC/60Hz, 11.5/8.5/9.2 Amps Spacers - Center: 1 Spacers - LH: 1 Spacers - RH: 1 Baffle Filters: 2 Halogen Lights: 3 Heat Lamp (250W): 2 Recommended Duct Sizes DIV1200 (1200 CFM Interior): 10" Round DEV1200 (1200 CFM Exterior): 10" Round DEV1500 (1500 CFM Exterior): 10" Round Overall Dimensions Overall Width: 47 7/8" (121.6 cm) Overall Height: 18" (45.7 cm) Overall Depth: 24" (61.0 cm)