FRP drainage channel (SCH52/40) FRP drainage channel (SCH52/40) Technical Table Grating type SCH52/40 - load 2000 daN Distance between supports (channel inside dimensions) mm 500 Flexural breaking load with load on the center line >11000 daN MANHOLE COVERINGS 500 MM - 2000 DAN | MANHOLE Code: SCH52/40