Therma-Tru Entry or Patio door transom, can also be used over windows or by it's self to enhance a wall. Interior Unit Size: 51-3/8 x 13-5/8 Exterior Unit Size: 53-5/8 x 15-1/8 Jamb Thickness: 6-1/2 inch ( extra wide 2 x 6 Construction) Brickmould: Yes, Applied Exterior Color: White Interior Color: Pine Rough Opening: Is normally 1/2 inch more then interior unit size We have 2 - one made from oak the other painted white NOTE: These are New, Discontinued size. Limited to existing inventory. No Refunds, No Returns