This hidden vent soffit offers a smooth, flat surface that allows for ventilation without unsightly perforations, according to the firm. The solid version can be installed as either a solid soffit or vertical siding. The 3 1/3-inch vent provides up to 9.65 inches of net-free intake area for proper roof ventilation. Available in 12 low-gloss colors, the product features a Class 1A fire rating and lifetime limited warranty.  www.certainteed.com