The Urbo® window fastener with separately fixed wedge is suitable for the FIRST® APL Architectural Series. Design requirements mean that standard residential windows must use the Urbo® wedgeless fastener.
Urbo hardware is generally powder coated and should be cleaned on a regular basis.
Atmospheric deposits, especially in coastal areas, can cause damage to the coating, and the surface should be cleaned at least three-monthly. In severe marine environments this should ideally be done monthly, especially for exterior-mounted hardware such as door handles.
Cleaning should be undertaken with a dilute solution of a mild detergent and warm water. A soft brush or rag should be used and there should be no use of abrasive aids. After cleaning, the coating should be wiped down with fresh water.