Greenerhydroponics.com has your ducting needs covered. We offer both insulated and non-insulated ducting, helping keep air to and from your grow moving. Non-insulated ducting offers a higher level of flexibility and is lighter weight. Insulated ducting will help reduce unwanted noise and heat transfer but does weigh considerably more. Building a custom setup? A large variety of couplers, flanges and clamps are also available.