Ekena Millwork GVWRO16X1600RFUWR Unfinished, Functional, Rough Sawn Western Red Cedar with Brick Mould Face Round Gable Vent 21-Inch x 21-Inch Frame Size, 16-Inch x 16-Inch Handcrafted and manufactured in the USA Authentic beauty with real wood Can be painted or stained Comes complete with screening to keep out insects Available in rough sawn or smooth