UNISTRUT P1000HS 20 PG HS-Holes Channel | 1-5/8" x 1-5/8" | Silver delivers versatile support for framing, mounting, and structural systems. https://www.northstarindustries.ca/products/p1000hs-20-pg-single-hole-1-5-8-channel?variant=50862164738342&country=CA