2019 BMW 3-Series Cargo Liners

This mat fits near perfect and butts up to 3rd row mat. It will cover the floor vents. I rolled it back to the vents and marked all 3 areas with chalk. Then I used a 1/2" forstner bit ($6.35 at Amazon) to drill 4 holes for each side vent and 6 holes for center vent. Used drill at slow speed with a wood 2 X 4 underneath. No need to clamp nor freeze mat. Super clean holes and no melting during the drilling process. Looks and works great now. Super easy to roll up when 3rd row seating is desired even in winter.