Duct Tube 12 - Flexible Dual-Layer Alum. 8' long, for 12" Duct Fan Grow System/ Trays/ Reservoirs This is difficult to achieve

This is difficult to achieve in facilities (modern or older) due to short comings in HVAC design

Spectrum : Red

Constructed with an aluminum mounting frame and heavy-duty steel enclosure

is commonly used in food products and is "generally recognized as safe" by the FDA and is seen as an alternative to other fungicides by the EPA

Duct Tube 12 - Flexible Dual-Layer Alum. 8' long, for 12" Duct Fan Grow System/ Trays/ Reservoirs This is difficult to achieveDesigned for ventilation applications including HVAC, dryer, grow rooms and tents. Four layer design makes it more durable and resistant to leaks, tears, and cuts. Steel wire spiral structure is flexible and easy to install in hard to reach places. Constructed of aluminum and thermoplastic; tube can be shortened for various applications. Ducting Size: 12 Length: 8 feet Includes two stainless steel 12" duct clamps PRODUCT DESCRIPTION This ducting is