Prime-Line D 1551 Roller Assembly, 1-1/8 in Dia Roller, 5/16 in W Roller, Steel, 2-Roller, C-Tab Mounting. Tandem steel ball bearing rollers; adjustable steel housing assembly; used by Elco and other glass door manufacturers; housing dimensions: thickness, 11/16 in; length, 3-1/8 in; height, 1-3/32 in; overall thickness, 13/16 in. Housing Width: 11/16 in. Roller edge type: Concave. Contents: 1 roller assembly.
| Type | : | Patio Door Assemblies |
| Material | : | Steel |
| Finish | : | Gold |
| Suitable for | : | Elco and Other Glass Doors |
| Dimensions | : | 3-1/8 in L x 11/16 in W x 1-1/16 in H |
| Bearing Type | : | Ball |
| Mounting Type | : | C-Tab |
| Number of Rollers | : | 2 |
| Roller Diameter | : | 1-1/8 in |
| Roller Edge Type | : | Concave |
| Roller Width | : | 5/16 in |
| Wheel Type | : | Tandem |