Check out this beautiful 6' 0" Premium Fiberglass Retrofit Patio Unit from Seconds & Surplus Building Materials. This fiberglass patio door unit comes with a white primed finish that'll make painting a breeze. The door's glass is Low-E featuring double glazing, argon fill, Low-E outer lite and clear inner lite. Our fiberglass patio doors will not warp, rot, dent or split. With composite jambs, these fiberglass doors keep out the weather and practically eliminate air and water infiltration all together.