Slotted channel Length –100 cmWidth – 16 ; 21 cmHeigth Channel – 14,6 ; 18,8 cmGrating – 12,8 ; 18,8 ; 20,4cmLoading class A15 (1.5 tons), B125 (12.5 tons), C250 (25 tons), D400 (40 tons)Channel – Polypropilene, Grating – Galvanised steel, Stainless steel.It comes complete with trash boxes.Easy to install. Installation Instruction here