16mm Backboxes

If you've got 16mm backboxes and are retrofitting Idratek modules then you'll soon notice that they won't fit. 25mm is the bare minimum required and it could cause a lot of messy and noisy work chopping out the brickwork to the required depth.

I found a way round this problem with Lutron spacers - with some judicious modifications depending on the module required to fit, they work quite well. Idratek modules are not really that flush anyway, so the extra 16mm provided by the spacer doesn't IMHO make too much of a difference to the aesthetics. The keen eyed among you will notice the door contact in the frame that connects to the DRB's switch input.