Hot Rolled HRX Grate
| Style Designation | Width in inches | Length in inches | Lbs/Sq Ft | Approx. size of opening in inches |
| 3.0 | 48, 60, 72 | 96, 120, 144 | 3.000 | 15/16 x 3-7/16 |
| 3.14 | 48, 72 | 120 | 3.140 | 1-5/8 x 4-7/8 |
| 4.0 | 48, 60, 72 | 96, 120 | 4.000 | 15/16 x 3-7/16 |
| 4.27 | 48, 60, 72 | 96, 120 | 4.270 | 1 x 2-7/8 |
| 6.25 | 48, 60, 72 | 96, 120 | 6.250 | 13/16 x 3-3/8 |