640-4770 V
Features:
- Total Open Area: 174.4 sq. in.
- Frame Size: 19.5" x 19.5"
- Floor Flow Rate: 788 GPM @ 1.09 ft/sec
- Wall Flow Rate: N/A
- Flow Rate @ 1.5 ft/sec: 812 GPM
18" x 18" Grate and Frame
| Part No. | Description | Case Quantity | List (US $) |
| 640-477x V | 18" x 18" Grate & Frame | 1 | 533.24 |
Replace the final x in the part number with the color of your choice (see Color Guide for colors)
640-4760 V
Features:
- Total Open Area: 249.6 sq. in.
- Frame Size: 25.33" x 25.33"
- Floor Flow Rate: 2035 GPM @ 2.62 ft/sec
- Wall Flow Rate: N/A
- Flow Rate @ 1.5 ft/sec: 1168 GPM
24" x 24" Grate and Frame
| Part No. | Description | Case Quantity | List (US $) |
| 640-476x V | 24" x 24" Grate & Frame | 1 | 686.66 |
Replace the final x in the part number with the color of your choice (see Color Guide for colors)