Rated 3 out of 5Â by KC60 Knock-outs can be tricky
Does the job, but some of the ones I used had knock-outs that refused to budge without cutting. The back can crack if you try to knock out without cutting.
31 May 2015
Rated 4 out of 5Â by Leshouches666 Surface box 20mm knock out
Used these to mount thermostats with cable glands in the knock out holes.
I pushed the knockouts from the outside and they broke away cleanly. It requires a fair bit of force.
Good price and fine for what I needed.
11 Dec 2014
Rated 5 out of 5Â by FunkyJive Inexpensive and simple
For those having issues reliably removing the cut-out, this approach works for me every time...
Drill a central hole about the same diameter of your screwdriver, insert screwdriver, and lever to one side. The cutout should then come straight out cleanly.
3 Dec 2014
Rated 4 out of 5Â by SpArkrite Ideal trunking to conduit box
Great box for connecting 20mm plastic conduit to plastic trunking. Only gave 4* on performance because the knockout didn't work for the 20 mm hole and had to be drilled. I box was badly broken because of this so beware.
26 Dec 2012