How it fits. Measure the inside of the drawer at the narrowest point, and the height from the drawer floor to whatever is above it. The organizer is made 1 mm smaller than your width and depth on every side and 0.5 mm lower, so it drops in and doesn't rattle. Anything up to 250 × 250 mm comes as one piece; bigger drawers get two or four pieces that sit side by side, and when your drawer is only a hair over a piece size we make it a few mm smaller so you don't pay for extra pieces. The biggest organizer is 500 × 500 mm — in a deeper drawer the back stays open. A compartment can be up to about 246 mm long, so a chef's knife or a spatula lies in the open part of the drawer. Under Customize the compartments you can split, merge and drag every wall, choose movable dividers (slide-in plates, slots every 20 mm, one piece only), and change the height, walls (1.6 mm; 2 mm or more for tools) and floor. Wide trays go in PETG with a brim so they stay flat.