The DR4000 Series roller is the highest performing roller of Doric lineup. With a maximum weight capacity of 280kg per roller,
this roller is best suited for large and heavy door panels. Manufactured with an engineered polymer outer carriage housing
and passivated zinc inner carriage, this adjustable roller offers superior corrosion resistance and durability. The DR4000 roller
provides “ZZ” bearing performance rating and is moulded with a high performance engineered polymer that gives superior
load rating and cycle testing.