You can let sunlight shine into your barn-style gambrel shed with this Shed Master Dormer Kit. This outdoor decor piece features tempered glass and adds a hint of distinction to your storage building that won't go unnoticed. You can just cut a 22-1/2 in. wide x 28-1/2 in. high hole in your roof between the rafters and fasten this nifty dormer into place with the screws provided.