Plus Length – 100 cmWidth – 15 ; 20 ; 25 cmHeight – 10,2 – 31,1 cmLoading class C250 (25ton), D400 (40ton), E600 (60ton), F900 (90ton) HDPE channel with strengthening frame, Grating – Galvanized, Stainless steel, Ductile iron.Gratings are fastening to channel by 8-screw tie-rod fixing system.It comes complete with drain boxes.Easy to install. See Installation Instructions