The Allstar Performance Mesh Window Nets are developed to meet the approvals of National Hot Rod Association (NHRA), International Hot Rod Association (IHRA) and American Speed Association (ASA) with SFI specification 27.1.Large built in sleeves at the top and bottom of the net to accept most round tubes and bars in window installation kitsLightweight and durableWill protect the driver from debrisThe Mesh Window Nets are manufactured from a durable and lightweight polyester mesh providing an advantage over standard window nets as smaller debris is deflected and visibility is not interrupted by wide fabric strips. The nets are available in a choice of rectangular or angled fitment for greater window coverage depending on window shape.Dimensions: Rectangular - 18" x 22", angled - 18" x 22"/27"