6"brn plst exst roof cap. Designed to exhaust bathroom and kitchen fans through the roof. Complete with 4" or 6" low profile removable collar and molded screen to keep the birds out. An ideal replacement for metal roof exhausts. Made of high-impact plastic. Will not crack under extreme temperatures. Wide flange area with pre-drilled holes for easy installation. 6", brown (use with 6" round duct)