This 4 x 4 x 4 inch t-connector is designed to vent multiple areas in your grow room without the need of additional fans. This t-connector transitions one pipe into two for your heating and air-conditioning applications. It is constructed from galvanized steel and pre-crimped for easy installation. This adapter will effortlessly connect to your 6-inch circular air ducting with two stainless steel clamps or sealed with aluminum duct tape (sold separately). Give your plants the ventilation they need to grow strong with this economical t-connector!