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Looking through one of the unused mounting holes in the back of the backbox, I'd say breeze block or similar, hard plastered. That doesn't mean that wall a metre away isn't something completely different, of course. There were still post-war building materials shortages in the 1950s.


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It's drywall, also called sheet rock, and it is very typical. It is made of gypsum with a thin paper layer on each side. It is applied directly to the studs with nails or screws. The sheet size is typically 4'x8' which is a size that can fit both 16" oc and 24" oc stud spacing. Longer sheets are available at 10' and 12' The seems are covered with mud and ...


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I would use expanding plastic screw anchors or wooden dowels. I've used solid wall anchors such as this many times over the years and they provide secure attachment when installed properly. You need to drill a clean, precisely-sized hole in the wall to hold the anchor. The size/depth of the hole is specific to the anchor. When a screw is introduced into ...


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For a 30 pound mirror i would not use just screws into plaster and lath. If your wall is as you state in the comments then i would use My favorite Toggle anchors They are very strong and have a beefy machine screw. You will need a 1/2 inch drill bit. You drill the hole, collapse the anchor, slide it into the hole, snug up the wall tab and break off the ...


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I have installed quite a few registers like that but have never found them for sale. I have made them out of scraps of polypropylene, and UHMW. Most had to be shaped on 1 side a belt sander worked well for that holding the plastic with pliers. A few I could put in without shaping but not very many. Note if you drill the hole with a drill it needs to be ...


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"Old work" electrical boxes have similar tabs. I've never seen tabs like that sold separately, but the electric boxes are cheap enough that you could just buy a few for the screws and tabs they come with. Note the tab sticking up in the picture.


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