The Beavertail 1700 and 1800 Boat Blind Lids easily attach to boat blind frames and feature a tri-wing design that emhances the hide from a variety of angles. FeaturesFlip Lids Fold Up Seamlessly with Beavertail Boat Blind, No Need to Remove Between HuntsFits all Beavertail Boat Blind Models. 4 Pack (1700 / 1800 Series)Tri-Wing Design Conceals all Three Sides, Enhancing your Hide from Every AngleAdjustable Sway Arm Customizes Lid HeightChoose Between Karma Wetland and Blind Spot Timber Camo Patterns to Match Your BlindInstall it Once, and it's Ready