Kasah is the common Malaysian name for the timber of Pterygota spp. (Sterculiaceae). Vernacular names applied include kangsar (Peninsular Malaysia), melebu (Sarawak) and menuang (Peninsular Malaysia). Major species include P. alata and P. horsfieldii. The sapwood is not differentiated from the heartwood, which is straw-coloured to light brown. Also known as Narikel (India); and White tulip oak (Papua New Guinea).

The timber is moderately hard and moderately heavy with a density of 575-640 kg/m3 air dry.