| Application | Industrial and Commercial Buildings |
| Assembly | Unassembled |
| Base Diameter | Not Applicable |
| Base Height | 1 3/4 in |
| Base Length, Base Width, Overall Width | 57 1/2 in |
| Base Shape | Square |
| Bearing Type | Regreasable Pillow Block |
| Blade Design | Swept Steeply Pitched |
| Blade Diameter | 48 in |
| Blade Finish, Housing Finish | Galvanized |
| Blade Material, Housing Material | Steel |
| Brake Horsepower | 2 1/5 hp |
| Compatible Curb Grainger Part Number, Compatible Curb Manufacturer Part Number | 2ZV86, 3AZJ7, 3C216, 4HX45, 4HX53 |
| Cutout Length | 52 in |
| Cutout Size | 52 in L x 52 in W |
| Drive Type | Belt Drive |
| Electrical Connection | Power Cord |
| Features | Spring Loaded Damper Lifters |
| For Air Type | Emergency Smoke |
| For High-Static Pressure Applications, Includes Drive Package, Includes Motor, Speed Controllable | No |
| Fusible Link Temperature | 165 Degrees F |
| Housing Length, Housing Width, Overall Diameter | 56 in |
| Item | Axial Upblast Roof Exhaust Fan |
| Maximum Airflow | 34,761 cfm |
| Maximum Ambient Temperature | 1,000 Degrees F |
| Maximum Fan Speed, Maximum Motor Speed | 587 RPM |
| Maximum Inlet Air Temperature | 120 Degrees F |
| Maximum Motor Horsepower | 5 hp |
| Maximum Noise Level @ 5 Feet | 29 sones |
| Maximum Static Pressure | 1/2 in wc |
| Minimum Airflow | 18,650 cfm |
| Minimum Motor Horsepower | 2 hp |
| Minimum Motor Speed | 313 RPM |
| Mount Type | Roof Curb |
| Mounting Location | Roof |
| Mounting Orientation | Horizontal, Vertical |
| Noise Level @ 0.000 in SP @ 5 ft | 18.8 sones |
| Number of Blades | 6 |
| Overall Depth | 74 in |
| Overall Height | 71 7/8 in |
| Power Source | Electric Motor |
| Propeller Shaft Diameter | 1 1/4 in |
| Resistance Properties | Weather Resistant |
| Series | RBUMO |
| Smoke Control Maximum Temperature | 100 Degrees F for 15 min, 500 Degrees F for 4 hr |
| Sound Level | Fan RPM 433: 18.8 Sones @ 0.000 in SP and 5 ft, 18.4 sones @ 0.125 in SP and 5 ft, 18.2 sones @ 0.250 in SP and 5 ft, Fan RPM 496: 23.0 Sones @ 0.000 in SP and 5 ft, 23.0 sones @ 0.125 in SP and 5 ft, 22.0 sones @ 0.250 in SP and 5 ft, 23.0 sones @ 0.375 in SP and 5 ft, Fan RPM 587: 29.0 Sones @ 0.000 in SP and 5 ft, 29.0 sones @ 0.125 in SP and 5 ft, 29.0 sones @ 0.250 in SP and 5 ft, 28.0 sones @ 0.375 in SP and 5 ft, 29.0 sones @ 0.500 in SP and 5 ft |
| Spark Resistant Construction Type | A |
| Standards | UL and cUL Listed |