6900 Patio Doors   Sliding Aluminum Door - 6920 - Dual Glazed 5 5/8 in. Frame - 6921 - Dual Glazed 5 1/4 in. Frame - 6970 - Dual Glazed 3 3/4 in. Frame - 6980 - Dual Glazed 3 3/4 in. Frame Return Back     6920 - Dual Glazed 5 5/8 in. Frame     XO OX OXO OXXO