Lower Filters 4″ for exhaust fan

Features:

Composed of the frame and horizontal blade assembly made of the high quality extruded aluminum profile with the advantages of durability and corrosion resistance.

Designed to have a sturdy construction. Blades are fixed to the main frame using screws and riveted to the millions for bigger sizes.

Weather resistant structure with blades inclined at an angle of 45oto protects against rainwater penetration.

Assembly provides around 45% effective pressure area.

Multiple sections will be assembled as per request.