The LoPro drive-up window air curtain series is now available in 25-, 28-, and 30-inch lengths. According to the manufacturer, this is the world’s first NSF International-certified (NSF/ANSI 37-certified for those health code-required situations) drive-up window air curtain. The LPN Series can be used for any drive-up window, small pass-through window, or narrow openings where a small, unobtrusive unit is needed. It is available in obsidian black (standard production color), titanium silver, pearl white, and Spartan bronze. It provides substantial savings on a building owner’s energy bills and is ideal for environmental separation and insect control, the company says. The LoPro protects against dirt, dust, and car fumes, keeping the building’s interior cleaner and more sanitary. Additional lengths and options are available.

Mars Air Systems, 14716 South Broadway, Gardena, CA 90248; 800-421-1266 or 310-532-1555; 310-324-3030 (fax);;