The Armstrong International D25934 Trap

60Hz single-phase systems

the linkage requirements are standardized for rapid field installation

the 243-8-IRV model includes an internal relief valve (IRV)

While cleaning can sometimes help

Carrier 50DK406336 Side Housing 340155-7024 The Armstrong International D25934 TrapThe Carrier 50DK406336 Side Housing is a critical structural component engineered specifically for high capacity centrifugal blower assemblies used in industrial and commercial HVAC systems. This heavy duty blower scroll housing provides the necessary aerodynamic profile to maintain optimal static pressure and airflow efficiency across the coil. Designed for a precise fit within Carrier rooftop units (RTU) and air handlers, this OEM replacement part