This Outus 5.9-inch Square to Round A/C Coupler Connector is a must-have accessory for any portable air conditioning system. Its high-quality ABS plastic construction ensures durability and reliability, even under heavy use. The clever universal twist design allows for effortless installation without needing to worry about left or right-handed threads. With a tight seal, it prevents air leaks and keeps out dust, insects, and other debris, improving cooling and heating efficiency. This versatile fitting is compatible with most 5.9-inch diameter AC exhaust hoses, making it ideal for both summer and winter use.
  When you need to connect your portable air conditioner to an exhaust duct, this square to round coupler is the perfect solution. Designed for easy installation, it allows you to extend the exhaust hose without any hassle. Its strong and flexible material ensures a secure connection that won't loosen over time. The tight seal keeps your system running efficiently, reducing power consumption and maximizing comfort. Whether you're setting up a temporary AC unit in your home or office, this coupler delivers practical performance and reliable service.