| PartNumber | RM3U1922SBK | RM3U1918SBK | RM3U18BRKT |
| Description | Racks & Rack Cabinets Chassis - Solid 5.25 (3U) 16.6x22 | Racks & Rack Cabinets Chassis - Solid Racks | Racks & Rack Cabinet Accessories Rear Bracket Kit For RM Series Racks |
| Manufacturer | Hammond | Hammond | Hammond |
| Product Category | Racks & Rack Cabinets | Racks & Rack Cabinets | Racks & Rack Cabinet Accessories |
| RoHS | Y | Y | Y |
| Product | Enclosures | Enclosures | Enclosures |
| Type | Rack-mounted, Unvented | Rack-mounted, Unvented | Rear Bracket |
| Width | 1.583 ft | 1.583 ft | 422 mm |
| Height | 5.25 in | 5.25 in | 133 mm |
| Panel Height | 133.35 mm | - | - |
| Panel Width | 421.64 mm | - | - |
| Color | Black | Black | Black |
| Depth | 22 in | - | - |
| Dimensions | 558.8 mm L x 19 in W x 5.25 in H | 457.2 mm L x 19 in W x 5.25 in H | 457 mm L x 422 mm W x 133 mm H |
| Material | Aluminum | Aluminum | Steel |
| Series | RM | RM | RM |
| Brand | Hammond Manufacturing | Hammond Manufacturing | Hammond Manufacturing |
| Ventilation | Solid | - | - |
| Number of Rack Units | 3U | - | - |
| Product Type | Racks & Rack Cabinets | Racks & Rack Cabinets | Racks & Rack Cabinets |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Enclosures, Racks and Boxes | Enclosures, Racks and Boxes | Enclosures, Racks and Boxes |
| Unit Weight | 8.800 lbs | 6.100 lbs | 2.540 lbs |
| Length | - | - | 457 mm |
| Features | - | - | Adjustable rear brackets, extension brackets |