Rectangular box extension ring increases the depth and capacity of existing rectangular junction box. It accommodates additional wiring, larger devices, or deeper installations. This open-ended steel ring bolts directly onto the box, providing extra volume while maintaining alignment for covers and devices.
Available size
| Size | Deep | Capacity | Ref. No. |
|---|---|---|---|
| 4″ x 2″ | 1-7/8″ | 13 cubic inch | C7121 (UL) |
| 4″ x 2″ | 1-7/8″ | 13 cubic inch | C7122 (UL) |
| 4″ x 2″ | 1-7/8″ | 13 cubic inch | C7123 (UL) |
| 4″ x 2″ | 2-1/8″ | 15 cubic inch | C7125 (ISO) |
| 4″ x 2″ | 2-1/8″ | 15 cubic inch | C7126 (ISO) |
| 4″ x 2″ | 2-1/8″ | 15 cubic inch | C7127 (ISO) |
| 4″ x 2″ | 2-1/8″ | 15 cubic inch | C7128 (ISO) |
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