Lomanco® Roof Louver Aluminum Brown Foot & Check Valves if you work outdoors or

if you work outdoors or in environment where the temperature may vary

metal gears and cam action headlock

durable 230mm zinc die cast shank

65% Vinyl on Fiberglass

Easy top fill removable tank

Lomanco® Roof Louver Aluminum Brown Foot & Check Valves if you work outdoors orLomanco 500 & 600 Series Pan Style Includes 8x8 perma coated screen for added protection. Flange on vent stack for superior weather protection. 550 PRO has one piece molded plastic collar for added protection and aluminum top and bottom. 550 PRO G has one piece molded plastic collar for added protection and galvanized top and bottom. Lifetime Limited Warranty 550 Pro Series. Models 600 S and 550 S have a tall throat to allow room for air circulation