Exterior Prehung Jamb for 80" High Slab with Black Hardware - Left Handed Unfinished Pine WoodThe jamb is for Ark Design Exterior Front Door Collection. The width can be trimmed to fit various openings. The jamb is made of pine wood with white finished surface, paintable. Quick assemble jamb kitJamb kit needs to be assembled quickly with nail guns within 5 minutes. And, there are scale markings on the jamb, you simply need to cut according to the width of your door slab.