Cyberpower universal rack rails - 4POSTRAIL

I've got a brand new, unopened in box, Cyberpower 4POSTRAIL kit. It's a universal rack rail mounting system that lets you mount a rackmount server in a rack when you don't have the matching rails. It acts as a little shelves around the edges to support the server. Retails for $143 on Amazon.ca. Check the specs for more info: https://www.cyberpowersystems.com/product/ups/hardware/4postrail/#/ I bought two pairs but I only ended up needing one, and this one has just been idling in my closet for the last year. My poor rack planning is your gain! I didn't include a photo because it's unopened, still in a brown box.