For fresh air intake or building pressure relief in natural gravity or negative pressure applications.
Louvered exterior, bird and insect screen. For lower entering/exiting velocities when fresh air intake or pressure relief is required.
Rigid/reinforced hood, bird and insect screen. For fresh air intake or pressure relief applications.
Lightweight spun aluminum hood. For fresh air intake or pressure relief applications.
Galvanized steel construction. For fresh air intake or pressure relief applications.
