Im looking to build some robust wardrobe like cupboards for my storage cage to store tools and other ‘garage type’ items. The units will be 1.8m high x 76cm wide and about 80cm deep. The cupboard bit will be about 60cm deep (made of 40mm thick pine) and I want something like fridge doors to be about 20cm deep to store mostly bottles, aerosol tins and other fluid containers. Any thoughts about what might be suitable for the frame and shelves (possibly removable or adjustable at different heights) would be welcome. To keep things on the shelves, I’m thinking elastic straps like bungy cords.