For ease of use, you can now custom order wood-Ultrex windows in 1/64-inch increments. The wood-Ultrex line, which comes in a variety of styles, is designed to be eight times stronger than vinyl and three times stronger than wood-vinyl composites. It also will not scratch, warp, or corrode. Integrity by Marvin Windows and Doors. 888-419-0076. www.integritywindows.com.