Ply Gem Windows has made available its 1500 Vinyl Collection, which features single-hung, sliding, picture and architectural-shape styles with a common sash and common sizing. Jamb alignment clips help center the unit in the opening. An easy-to-remove meeting rail with a clip and anchor suits drywall installations. Three frame options—beveled, brickmould and flat—and three colors—beige, clay and white—as well as multiple grille, simulated divided lite and shape options, are available.