When a ceiling outlet box is too shallow for the splices, or a new drywall layer or strapping has buried the box behind the finished surface, an extension ring is the quick fix. The Ortech 55171K is a 4 in octagon extension ring, 2-1/8 in deep, drawn from galvanized steel with 1/2 in and 3/4 in knockouts. Electricians use it to add wiring room at light and junction box locations.
Why electricians pick it
- Adds 2-1/8 in of depth and 344 mL of volume to a 4 in octagon box.
- Drawn galvanized steel, one piece with no seams.
- Six knockouts (four 1/2 in, two 3/4 in) for extra cable or conduit entries.
- cETL certified.
- Priced per ring for single repairs; cases of 50 available.
Specifications
| Spec |
Detail |
| Brand |
Ortech |
| Model |
55171K |
| Type |
4 in octagon box extension ring |
| Size |
4 x 4 x 2-1/8 in |
| Capacity |
344 mL |
| Material |
Galvanized steel, drawn |
| Knockouts |
4 x 1/2 in, 2 x 3/4 in |
| Cover |
Not included |
| Certification |
cETL |
| Case quantity |
50 |
Pro tip from the counter
When you calculate conductor fill, add the ring's 344 mL to the base box's marked volume and count every conductor and device in the combined space, as the CEC box-fill rules allow. Then make sure the ring is bonded to the box, since the fixture and cover now mount to the ring.
Best for: adding splice room at light boxes, extending boxes behind new drywall or strapping, junction box repairs, renovation rough-ins
We ship from Vaughan, ON across Canada. Buying by the case? Get trade pricing through a quote or at (905) 553-7171.