"That assumes the door has a separate material - which probably it does, but not necessarily" You can also use the grouping tool in poser to create a new mat group for the door and make it invisible (as leather-guy pointed out :D) I've highlighted the grouping tool here incase you don't know wher it is queri 1: Create a new group and call it 'door' or something... 2: Add and remove polygons to the group using the + and - symbols....You may have to 'remove' the door group from any existing groups as well using the 'remove group' button. 3: When the area you want to be the door is a distinct and separate group of polygons use the 'assign material' button to create a new material zone. You can then make this zone transparent in the material room and substitute a prop for your door.