Tropical hardwood is a renewable resource, which provides an important and legitimate source of income for many equatorial countries. Making window frames from it does less damage to the environment than making them from aluminium or PVC.
The important thing is to ensure that the hardwood is harvested under conditions that allow the natural regeneration of the forests. It is perfectly possible to produce timber profitably under such conditions, and it is for us as consumers to insist that any products we buy are produced from properly managed forests.
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