1000mm Silver Twin Slot Shelving Kit

Does anyone know if twin slot shelving is a standard ? I have some brackets from B&Q but they didn't have the tracks in stock Screwfix do but

Twin slot & single slot shelving ✓ customisable ✓ various shelf boards + brackets ✓ for storage + organisation » order your twin slot

twin slot shelf In this film I install some twin slot rail and bracket shelving in the garage Fitting it around the up

twin happiness slot soldi veri Buy Twin Slot Shelving at Free returns Everyday products, everyday prices Sign up to receive exclusive offers, vouchers and deals