Cut an opening in the screen from the outer edge into unit measuring 4 1/2 inches for the crank handle.
Fits select Heng's vent models
14" x 14" size
New and Improved design. One-piece seam-less self-centering metal base with interior garnish and wider 1-1/4″ flange & radius corners fits all existing roof openings covering existing screw holes. Covers interior stains left by former garnish rings.
Color: White
Screen Hole for Crank Handle From Inner Edge into Unit 3 1/2"