Peak Performer II Unfiltered Shingles a low-profile, shingle-over vent installs at the peak of the roof allowing exhaust ventilation along the entire ridge -- end-to-end. Air Vent's independent research & testing have demonstrated that the best performing ridge vent, in terms of weather protection and airflow, is an externally baffled ridge vent. We've taken that technology and rolled it into our newest ridge vents. They install fast and are virtually invisible on the roof.