"Having seen the floppy plastic units on offer at DIY stores and finding them to have poorly designed opening systems, I decided to go upmarket with a TriMetals Sentinel. First the good news: you get a solid, rust-proofed unit which should last a long time and looks OK. In the picture it holds stacks of stuff but it doesn’t take much to fill it. Assembly instructions are awful. It’s one booklet for all units and it’s like an advanced Meccano project. The pictures you need aren’t there or look generic so there’s trial and error. Most of the assembly involves quality stainless screws and nuts. I used a cross slotted screwdriver and mini mole wrench but it was horrendously fiddly to assemble. I suspect that a box spanner would help which would cost little to include. Assembly took me most of a fine day. Forget assembly on a cold miserable Autumn day. Well done ScrewFix for organising quick delivery and including the plywood floor which I’d say is essential. At these prices to make it a £17 accessory is inexcusable."