Replacing a sliding door roller? See the Sliding Door Roller & Carriage Buying Guide for the right load rating, wheel material and mounting pattern. Patio, wardrobe, cavity and security door rollers from 12 kg to 40 kg load capacity. Direct replacement for A&L®, Bradnam®, Stegbar® and most Australian sliding-door brands. Tiered pricing on every listing — locksmiths, glaziers and property maintenance get bulk rates.