"What a great product for plasterboard walls, simply draw around the base, cut it out using a drywall saw and slot in. The wings anchor the unit to the wall when the faceplate is screwed in. I wouldn't use anything else for drywall!"
"Moved a socket in a stud wall so needed a new drywall back box. Drew round the outline on the wall and cut out the rectangle of plasterboard. New box slid straight in snugly and locking wings snapped not place. Made my life easy !"
"Good quality material with good fixing lugs. Knock outs needed persuasion with a stanley knife but this does not detract from the quality of the product and personally I prefer knock outs not fall outs.
Would definitely recommend these if you're looking for a dry lining box."