This Ventline Roof Vent is radius cornered, 14" x 14" and has a low-profile galvanized steel roof flange to prevent leaks. The Ventline roof vent has removable screens and a one piece heavy galvanized dome. Garnishes are sold separately. We offer the best so you worry less with higher quality and better performance that outlast all other brands. We carry all the accessories and hardware needed to make installation easier and more productive.