If you like to have clean looking mitres from the outside of your boxes or trays without any visible methods to strengthen them, then our internal mitre keys for boxes and trays are the perfect solution. These are only suitable for boxes and trays that will have all interior walls fully lined to conceal them.
How to fit
These internal mitre keys for boxes and trays are easy to fit with a 6mm or 1/4 inch router cutter, set to a depth of 3mm and a length of 21mm. Make a few test cuts in scrap material first. Glue in with some PVA and push into place. Our wooden mitre keys come in packs of 24.
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