Elco Lighting EP822W Barndoor Track Accessories, All WhiteElco Lighting EP822W EP822W Product Description Elco Lighting Barndoor Track Accessories, All White Specifications: Barndoor Shutter AccessoryEP422For use with ET640, ET650EP820For use with ET547, ET62830EP822For use with ET631, ET635, ET637, ET639, ET644EP823For use with ET630. About Elco Lighting: Founded in 1991 by its president, Steve Cohen, ELCO Lighting develops and markets lighting products for commercial and residential applications. Founded