... Channel 1) Size: 41 x 41, 41 x 21, 41 x 62 2) Finished:PLAIN, PG, ZP, HDG 3) Thickness:1.2~2.5 ... 4)Length:3 or 6 met Strut ChannelFeatures:1) Material: steel and stainless steel ... to customers' drawings or sample7) Length:10 and 20 feet(3m,5.8m,6m ),special length are available upon requests structural steel,unistrut channel ...