Trail Armor's handy cargo rack allows to you securely stow your cooler, tool bag, etc. on your Polaris RZR and RZRS's trunk box without your gear sliding off. Features fasteners for easy installation and removal. An expandable 15" x 15" bungie net included. Rack inside dimensions are 19 1/4" front x 20 1/2" back x 11" depth (trapezoid shape) and covers the entire lid of the plastic trunk box. A wrap around slotted 2" rail offers plenty tie down points and cargo retention. Must be used with Polaris's trunk box.