Self centering metal base with radius corners. Interior garnish with wider 1-1/4" flange and radius corners. Rugged to withstand excessive wind and weather. Attractive - designed for good looks and lasting durability. Truly universal. Fits all existing R.O.'s. Covers all existing screw holes in roof. One piece seamless frame, deep drawn metal base. Covers all interior stains left by former garnish rings. Positive-seal weather stripping is leak resistant and water tight. Interchangeable with existing Ventline products. 14" x 14" - 1-1/4" W x 2-1/8". White garnish.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov