Grid pattern 2Wx4H in flankers and in center. No maintenance vinyl construction. White. Energy efficient 3/4" Low-E insulated glass. White. Screens included. Single-hung flankers. 10 degree angle. 6" projection from nail fin to outer face. Headboard and seatboard attached. Rough opening 72" x 43-1/2". Lifetime Warranty. Also available, preformed polymer roof for easy installation.