Lay Flat Ducting Poly Tubing 328 ft x 22 Inch, Flexible Ventilation Air Duct for Blower, Fan, HVAC, Inflated Diameter Approx. 14" (328 ft X 22 Inch) — Open-Box, 6% Off

Extra Long 328ft Length – Covers long distance airflow needs from end to end. Ideal for ventilating large warehouses, connecting remote grow rooms, or exhausting fumes from construction sites without joining multiple shorter tubes. Saves time and reduces leak points. 22 Inch Width – Standard Fit for Most Fans – Flat width of 22 inches (approx. 14 inches diameter when inflated) works with many axial fans, centrifugal blowers, and inline duct fans. Compatible with standard 14″ round outlets using duct tape or clamps (adapters may be needed for smaller outlets). Heavy Duty & Flexible Polyethylene Construction – Made from tear-resistant, weather-resistant lay flat material. Remains flexible in cold or hot conditions, yet strong enough for continuous blower operation. Can be used for fresh air supply, dust extraction, or odor control. Lay Flat Design for Compact Storage – Collapses completely when not in use, taking up minimal shelf space. Unrolls quickly in seconds and re-rolls easily after job completion. Lightweight enough for one person to handle a 328ft roll. Cost-Effective & Disposable Option – Affordable per square foot compared to rigid metal ductwork. Can be reused multiple times or disposed of after heavy contamination, making it a practical choice for spray painting booths, asbestos abatement, or emergency smoke ventilation. Product Description – 25in x 328ft Heavy Duty Lay Flat Ducting Tubing This extra-long lay flat ventilation hose is designed for air movement over long distances. With a flat width of 25 inches (inflated diameter ≈ 16 inches) and a total length of 328 feet, it allows you to deliver fresh air, remove stale air, or exhaust fumes from one end of a large facility to the other without taping multiple sections together. Key Features & Benefits: 328ft Continuous Length: No couplings, no air leaks, no weak points along the run. Perfect for long warehouses, multi-bay greenhouses, or temporary event ventilation. 25in Flat Width (≈16in Diameter): Matches common 16″ blower outlets. For smaller fans (6″,8″,10″,12″), use a reducer or simply bunch and tape the end to fit. Heavy Duty Polyethylene: Resists tears, punctures, and humidity. Not for high heat (keep below 150°F / 65°C). Quick Deployment & Reuse: Unroll and attach – no tools required for basic setup. Can be reused multiple times or disposed of after heavy contamination. Real-World Application Examples: ✔ Greenhouse & Hydroponics: Connect one end to a 16″ exhaust fan and run the tube down the aisle. Punch custom holes (using a hole punch) to distribute cool air evenly across 300+ feet of growing benches. ✔ Construction Dust Control: Attach to a dust collector or high CFM blower, place the open end near concrete cutting, sanding, or demolition work, and exhaust fine particles directly outdoors. ✔ Warehouse Ventilation: On hot days, push fresh outdoor air from a wall fan deep into the work area to improve air circulation for employees. ✔ Attic or Crawl Space Drying: After water damage, snake the hose into tight spaces and connect to a heater/air mover to force dry air to the far corners. ✔ Spray Paint Booth Exhaust: Lay the tube as a disposable exhaust path for overspray and fumes – replace when saturated. Important Notes for Use: This is a non-insulated, flexible duct. For temperatures above 150°F, use metal or silicone ducting. Diameter approximation: when fully inflated, round diameter ≈ (flat width × 2) ÷ π. For 25″ flat width, diameter ≈ 15.9″, so a 16″ fan outlet is ideal. Always secure both ends with duct tape, band clamps, or zip ties to prevent the tube from creeping or whipping under pressure. For perforated air distribution, you can cut small slits or holes along the tube – not pre-perforated. What’s Included: 1 x 25in (flat width) x 328ft (length) lay flat tubing, compressed into a roll. Note: Blower, fan, adapters, clamps, and tape are not included. Measure your fan outlet before ordering – a 16″ outlet is a direct fit; smaller outlets require reducers or bunching.