Airmaster Fan Co Airmaster&Reg; 31050UPC: 783429310508 | UNSPSC: 40101604 | GTIN: 00783429310508Indoor Air Quality > Roof Curbs > General Purpose Roof CurbsAirmaster® Roof Curb, Insulated, 31-1/2 in Outside Square Size, 8 in Height, Steel, DomesticSpecs:Outside Square Size: 31-1/2 inDomestic/Import: DomesticHeight: 8 inMaterial: SteelType: InsulatedCertifications/Standards:PROP65:This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov. | RoHS Compliant
| Finish | Black Oxide |
| Head Type | Knob |
| Insert Material | 12L14 Steel |
| Knob Thickness (C) | 1.500 in |
| Length (B) | 2.563 in |
| Length (E) | 2.250 in |
| Material | Cast Aluminum |
| Style | Dog Point |
| Thread Length | 2.250 in |
| Thread Size (A) | 1/2-13 |
| Total Width (D) | 0.250 in |
| Type | Hand Knob Screw |
| Weight per 100 pcs | 0.35 lb |