Hi - Needed 5 feet of ducting, and so had to buy a 25 foot box - My loss can be your gain if you need some ducting yourself. Clean, new, unused - bought from Home Depot for $65. Vapor barrier wmylar coat - quality stuff from Master Flow. Will remove ad immediately when sold. If its still up then its still available. Cash only, no shipping or trades, or weird e-coin craziness. Will not respond to availability questions or out of state numbers. Any questions, please TEXT - thank you -