Trimline offers Rigid Roll®, an attractive.

Trimline Building Products, Minneapolis, offers Rigid Roll®, an attractive, effective and easy-to-install ventilation system on the market. The product allows roofers to install ridge vents and cap shingles in one pass using a coil nailer. The vent comes in 20-foot rolls with 11 1/2-, 9-, and 7-inch widths.