The 240m3 p/h 5" RVK fan that was being used in my budbox flower room is now being used to extract the new room so its been replaced with the new 365m3 p/h 5" RUCK fan, my flower room temps as a result have dropped by 2 degrees C, Bonus!
To mount the RUCK fan into the budbox, i screwed two eyehooks into two of the threaded mounts on the RUCK fan, attached two lengths of jack chain and wrapped the chain around the top support bar of the budbox, and attached the fan at the sucking end to the c/filter using a fast clamp, and the other blowing side of the fan attached to the duct which supplies the air cooled shade with cool air.