Deep 8 1 2 in.
Square box extension ring.
The boxes are also available in red for fire alarm applications.
Kwikon slab box extension ring easily installs to square slab boxes to increase the overall height by 1.
4 7 out of 5 stars 32.
Sometimes you would end up with 4 or 5 rings stacked depending on how many wires and pipes there were.
Deep 1 2 3 4 knockouts.
4 5 out of 5 stars 27.
More buying choices 4 99 11 new offers arlington be1 5 electrical outlet box extender 1 gang white 5 pack.
Wholesale metal electrical box 3x3 square extension rings 1.
33 48 of 619 results for electrical box extension ring skip to main search results eligible for free shipping.
Red powder coat finish.
Of box for fire alarm circuits.
4 inch square mud ring for 2 devices.
Steel city 53151 1 2 3 4 pre galvanized steel square box extension ring with 1 2 inch and 3 4 inch knockouts.
12 awg solid insulated green ground wire.
53171 sub 4 square extension ring converts one gang to 4 square 2 1 8 in.
Square box extension ring steel 1 1 2 in.
Free shipping on orders over 25 shipped by amazon.
Provided with green ground screw and 10 long no.
Standard 4 1 2 and 3 4 in.
The boxes provide an easy method for the installation of electrical devices switches receptacles fans lights etc.
Get it as soon as mon jan 4.
Instead of stubbing a 90 out at the top we put a 4 box and extension ring so it ended up flush above the ceiling then we d come back add another ring and pipe them together or whatever.