Enjoy fresh-air ventilation, rain or shine, and reduce wind noise with these premium Window Vents. Made of high-quality, 3mm acrylic, these deflectors are among the quietest and best fitting on the market. Install quickly, without the use of exterior tape, into the window channel. They have even passed stringent TUV testing for quality and safety standards. Precision machined for a perfect fit on your vehicle. Available: Two-Piece, Four-Piece.