Check the listing for details. ProX XS-WM4U2DR ATA-style Rack Flight Case with Drawer - 4U. Condition: New with tags. Listed at 264.95 USD. Flight-grade Fortitude, ProX Protection Taking your rackmountable gear from venue to venue is stressful enough, but finding reliable, sturdy transportation to ensure your gear is always ready to handle whatever you can throw at it is an even greater challenge. Whether you want to take that literally or want the peace of mind of knowing that your gear is safe and sound, ProX is ready to roll. This ATA 300-style flight case comes built with 3/8-inch plywood, featuring their signature Honeycomb Digital Laminate, inspired by the manhole covers of New York City and engineered to endure all types of turbulence. Solid, 19-inch-width mountain rails are included to consistently secure your rack gear, offering 12 inches of unimpeded depth.