$3.00
Opening Size: 1-1/2 x 3/16 x 2-1/2
Outside Size: 2-1/4 x 3/8 x 2-3/4
And from Jackson Miniatures website:
these smaller doors and windows are made from high quality injection moulded white styrene and can be painted easily using ordinary hobby paints if you would like them to have a different appearance. (We recommend you start with a matte undercoat to stop the top coat "beading".)
No interior trim is included.