Air curtain for small openings & drive-thru windows The Swift 5 series is primarily intended for small openings such as kiosk and drive-thru windows and retail windows where a long, narrow air flow is required. This creates a temperature separating air barrier that prevents cold air from pushing in and hot air from flowing out. Schwank Swift5 Series Air Curtain is available in a 208V~18 model. Electric heated. Model lengths include 32″, and mounts up to 5ft. Model lengths include 32″, and mounts up to 5ft Mounting: Indoor horizontal wall or ceiling mounting up to 5ft Color: Available in white or black