Fortress 4.5" Coupler – LJ122W (White) | Lineset Cover Connector | MRCOOL Compatible A-09-HP-WMAH-115B Anti-freeze protection keeps water at

Anti-freeze protection keeps water at safe temperatures

One Insulated Drain Pan: Protects against condensation buildup

and lowering utility costs

Specifically designed for HVAC technicians

Built to last with corrosion-resistant components and robust warranties

Fortress 4.5" Coupler – LJ122W (White) | Lineset Cover Connector | MRCOOL Compatible A-09-HP-WMAH-115B Anti-freeze protection keeps water atThe Fortress 4. 5" Coupler LJ122W is designed to securely join two sections of 4. 5" lineset cover ducting, creating a clean, continuous run for HVAC refrigerant lines, drain hoses, and control wiring. This fitting is an essential component for any extended installation where additional duct length is needed. Part of the Fortress LD122 Series, this coupler is fully compatible and interchangeable with MRCOOL LineGuard, making it a reliable choice for