The FAMCO GVCU Louvered Gable Vent used for attic ventilation and for air intake or exhaust applications. Please see the spec sheet for different mounting flange options (flush mount, flange on back, and recessed mount). The gable vent comes standard with an 1/8 inch insect screen. Quality constructed in 16 ounce Copper. The FAMCO GVCU Louvered Gable Vent dimensions are width x height. Sizes available are 12×12 inch, 12×16 inch, 12×18 inch, 14×18 inch, 14×24 inch, 16×24 inch, 20×20 inch, and the maximum size 24×24 inch. The FAMCO GVCU Louvered Gable Vent is manufactured by Famco in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us by phone or email.