Motorized Louvers for 42" Fan - 100-240V, 50/60Hz - Galvanized Steel Two Stars The main difference is we

The main difference is we added a battery backup unit that provides emergency light functionality to the fixture

while the cover bolts are stainless steel

Inc Product Model UT220HQL Product Name UT220HQL Widescreen LCD Touchscreen Monitor Product Series U Brand Name Acer Weight (Approximate) 4

The 18-amp explosion proof device includes versatile internal operating mechanisms that allow easy field adjustment and can accommodate various standard manufacturer starters

Motorized Louvers for 42" Fan - 100-240V, 50/60Hz - Galvanized Steel Two Stars The main difference is weSpecifications Additional Information GPF AES 42X42 1227 Industrial Shutter Quick Summary Unit Type: Motorized Louvers Intake or Exhaust Applications Opening Required: 17" Flange Width: 1 1 2" Fan Diameter: 42" Frame Less Flange: 42" sq. in. Overall Square: 19" Weight: Voltage: 100 240V, 50 60Hz Panels: 1 Free Area: 1. 750 sq ft Operation: Power Open, Spring Return Materials: Galvanized Steel Mount Position: Horizontal or Vertical Motor Bracket