The Mini Flange Slot's 1/8" flanged edge nearly disappears for a clean 'line of light' look. For slots that don't go floor to ceiling, use the PE-SLOT-END to finish the edges. The insert also fits into the 1/2" or 5/8" Drywall Slot extrusions to build a sleek, finished 'slot' fixture thats modern and stylish. Three pairs of clips per meter are needed to secure two parts together, and the lens snaps on as the final piece.