Interesting use for a masonry box extension.

[K8MHZ]

This, from a ham radio forum I frequent:

Ever see one of these? I haven't. I'll bet @K8MHZ has. It's a double-sided electrical box. It has access from both sides. It could be an outlet on one side of the wall and a light switch on the other. In this case it was two 220V thermostats.

Double sided electrical box.....:rant:

 

[mgookin]

Where's the pics?

 

[K8MHZ]

Where's the pics?

I can see them.

Do you see anything, like an attachment number????

 

[K8MHZ]

Well, I posted them using Chrome and I can see them OK. When I checked using Firefox, no pics.

I will try to remedy.

Sorry 'bt that.

 

[K8MHZ]

Try again.....

View attachment 13851

View attachment 13852

 

[GoldDigger]

That worked. The problem with the direct links to qrz.com is that you have to logged in to see the images. That is why it worked for you.
You can test using a private browsing window.

 

[mgookin]

Those boxes are interesting. Can't say I've ever seen them before. Where did you come across them?

 

[mopowr steve]

Through wall boxes.

 

[1793]

This, from a ham radio forum I frequent:

Ever see one of these? I haven't. I'll bet @K8MHZ has. It's a double-sided electrical box. It has access from both sides. It could be an outlet on one side of the wall and a light switch on the other. In this case it was two 220V thermostats.

Double sided electrical box.....:rant:

I have, about one year ago, residential job I was on. Receptacles back to back

 

[mtfallsmikey]

Think I have one in my collection..
De W4KAV

 

[K8MHZ]

Those boxes are interesting. Can't say I've ever seen them before. Where did you come across them?

Pics from a web site.

I have seen the boxes but they were used properly as masonry extensions. I have never seen them used for back to back devices like in the pics.

 

[K8MHZ]

Through wall boxes.

Perhaps? The guy says they are 4 1/2" deep. I have never seen an extension that deep before. I didn't know there was a real product called a 'through wall' box.

 

[mopowr steve]

Yep, 3 1/2" for studs and 1/2" drywall on each side makes 4 1/2".

Used one once but it's been awhile. Not even sure if I can still get them I think it poses a problem with fire rating of walls.
Explain how it would be used as a masonry extension box?

 

[GoldDigger]

...I think it poses a problem with fire rating of walls.

It sure does, but that is not a problem for interior partition walls.

 

[mopowr steve]

Now I can't even remember where the ground screw hole would be located if they even had them?

 

[mgookin]

Yep, 3 1/2" for studs and 1/2" drywall on each side makes 4 1/2".

Used one once but it's been awhile. Not even sure if I can still get them I think it poses a problem with fire rating of walls.
Explain how it would be used as a masonry extension box?

Adding brick veneer to a building with an existing box flush to the wall behind the brick.

+1 on the fire rated partitions. You can't have boxes on both sides in the same framing bay.

 

[mopowr steve]

Adding brick veneer to a building with an existing box flush to the wall behind the brick.

+1 on the fire rated partitions. You can't have boxes on both sides in the same framing bay.

I'm still not sure how one uses these specific boxes as masonry extensions, as the face of the box on both sides has 6/32 holes for mounting devices unlike extension boxes which have a larger hole to allow it to mount to another box.

 

[TommyO]

+1 on the fire rated partitions. You can't have boxes on both sides in the same framing bay.

My house has a plastic (bakelite?) version of this with light switches on both sides - one switch in the garage, one in the hallway to the garage.

 

[crainelectric]

We use these for housing CAT6 "harmonicas" when we have to locate a termination point under the floor. Just put a handy box cover on each end and hang it with a Caddy clip.

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