There are different finishes that can be
applied to the external aluminium sash
which open many different possibilities:

1. a hard-wearing Polyester-powder coat
in a wide range of RAL colours;

2. metallic finish in RAL 9006 & 9007, or
anodised silver or light gold.

Internally there are further choices.
Wood can be treated with a clear lacquer
to enhance the warmth of the natural
grain, or painted in one of a range of RAL colours to match your interior decor.