60mm Diameter
Available in 60 mm diameter (0.38 cm - 0.4 cm - 0.45 cm - 0.5 cm - 0.55 cm - 0.6 cm)
70mm Diameter
and 70 mm diameter (1 cm).
Heat treated and painted or galvanized, making it resistant to weathering (resistant to oxidation and rust).
It is made of galvanized sheet metal and is available in different thicknesses to ensure that the shutter are carried safely and smoothly within the shutter box