Galvinised

Standard guage steel trunking to BS4678 part 11971, each l3mtr length of trunking comes complete with cover and connector plates which incorperate the necessary screws All Galvanised steel used to manufacture trunking is hot dip coated ref: G275 with a minimum coating of 275gm/m2 both sides.  
Construction
The cover is fastened by turnbuckles to the inwardly turned flanges on the trunk body, the turnbuckles also provide adequate earth continuity between the body and the cover. The internal connector provides adequate continuity through the use of screws with serrations under the heads.