Need a larger backplate that normal?
This is the solution, a 40mm diameter Brass backplate. Ideal if you need to add a lampholder to a wooden surface where there is a larger hole to cover up.
There is a 10mm male thread to allow you to fit any 10mm lampholder. Sorry we cant supply a nut cover for this large backplate.
You will need 3 screw which are 3x16mm countersunk wood screws which you find above in related products. (Screws not included)
Plate diameter: 40mm
Plate Height: 2mm
Thread Diameter: 10mm
Thread Height: 7mm
Fixing Hole Diameter: 3.8mm