20-2040 IS A 20MM X 40MM METRIC 20 SERIES RECTANGULAR T-SLOT PROFILE WITH SIX OPEN T-SLOTS, TWO ON EACH 40MM FACE AND ONE ON EACH 20MM FACE. THE PROFILE IS SMOOTH, WHICH MAKES IT RESISTANT TO DIRT AND DEBRIS BUILDUP WHILE ALSO BEING EASY TO CLEAN. THE 20-2040 PROFILE IS COMPATIBLE WITH 20 SERIES FASTENERS. IT IS A PART OF THE SMALLEST PROFILE SERIES 80/20 OFFERS, LENDING ITSELF TO WORK SPACES, MACHINE GUARDS, DISPLAYS AND PANEL MOUNT RACKS.,