Unistrut
41mm x 41mm Deep channel - Pre-Galvanised.
Thickness: 2.5mm
21mm x 41mm Shallow channel - Pre-Galvanised
21mm x 41mm Shallow slotted channel - Pre-Galvanised
41mm x 41mm Deep slotted channel - Pre-Galvanised
Channel Nut - Long
Channel Nut - Short