We build the PRO Racks with industry standard 3x3" 11-gauge steel tubing. The accessory holes on the front face are 1” for adjustable J-cups and PRO Spotter Arms. The accessory holes on the sides and upper and lower portions of the rack are 5/8”.
The Profile Racks are constructed with 2x3" 11 gauge, steel tubing. All holes on the uprights are 5/8". These are the typical sizes used by other manufacturers.
Because of the wide variability in designs and brands, we cannot guarantee other
manufacturers’ accessories are compatible with our rack. However, our standard sizes have allowed other customers to make it work.