Our Up/Down Glass Windows can be built with aluminum or uPVC frames. Aluminum windows can be built with natural aluminum, painted white, or anodized bronze. uPVC windows can be built with natural white uPVC, or we also have darn brown uPVC with a wood-grain applique, to give the appearance of wood. These windows can be built with a wide range of design characteristics & sizes, with clear, tinted or frosted glass, or even one-way mirror, we even offer several varieties of laminated safety glass. All of our Up/Down windows include insect screens.