Specifications Exhaust Capacity: 300 int./600 int./900 ext./1200 ext. CFM Electrical Requirements: 120VAC/60Hz, 1.7/3.9/6.6/3.9 Amps Spacers: 1 Mesh Filters: 2 Halogen Lights: 2 Heat Lamp (250W): N/A Recommended Duct Sizes DIV300 (300 CFM Interior): 7" Round DIV600 (600 CFM Interior): 7" Round DEV900 (900 CFM Exterior): 10" Round DEV1200 (1200 CFM Exterior): 10" Round Overall Dimensions Overall Width: 35 7/8" (91.1 cm) Overall Height: 14" (35.6 cm) Overall Depth: 24" (61.0 cm)