In any net in which a square-meshed panel is inserted in an untapered portion of the net, there shall be at most five open diamond meshes between each panel side and the adjacent selvedges of the net. In any net in which a square-meshed panel is inserted, wholly or partially, into a tapered portion of the net there shall be at most five open diamond meshes between the posterior row of meshes in the square-meshed panel and the adjacent selvedges of the net.