Snapvent® Continuous Soffit Vent is the best looking, most "framer-friendly", effective, easy to install continuous soffit vent on the market. Unique double leg channels hide edges of soffit material for clean look and help prevent vent from being pulled up into subfascia. Complies with the International Residential Code requiring that ventilation be balanced 50 percent exhaust/50 percent intake (soffit) in all situations including continuous ridge vents. Patents cover use of Tamlyn H Mold at seams. It has 1/8 inch holes proven to not allow insects/ bugs/bees etc. to enter the attic.