Profile: Duvale PLC manufactures precision crafted acoustic movable walls and sliding folding partitions. We provide concertina, double glazed, glass to glass & sliding folding walls and sliding folding patio doors. Our double glazed, sliding folding, aluminium framed movable wall system is designed to separate exterior and interior environments. It is suited to use in both residential and commercial locations, including hotels, pavement cafe, restaurants & stores.