OKNA Windows & Doors
OKNA hopper windows are an excellent choice where ventilation is an important factor, since virtually the entire window can be opened.
OKNA casement windows enhance your window viewing area and add more natural light to your house.
OKNA double hung windows are easy to maintain and tilt in for easy cleaning.
OKNA picture windows expand your view of the world and bring the outside in.
OKNA single hung windows are traditional in appearance and slide vertically.
OKNA windows slide horizontally to create ventilation that extends to the full height of the windows.