General description Our Set of 4 double rollers for sliding shower doors features a diameter of 23 mm and is made from injected zinc rollers. Designed for bathroom use, these rollers come with bumpers and fixings to ensure smooth operation and durability. Technical specifications Wheel diameter: 23 mm Glass thickness compatibility: 4-6 mm Glass opening compatibility: 12-14 mm Load capacity per pair: 30-35 kg Height adjustment: 7-8 mm adjustable via upper screw Usage Recommended to install a glass door within the load-bearing range. Consider installing additional replacement wheels to distribute the load across each pair of rollers. Replace plastic shell rollers every six months and metal shell pulleys annually for optimal performance.