This pressure measurement tool utilizes 17

outlet pressure range (white spring) to match standard appliance manifold requirements

but you should never undersize the horsepower

including shaft-up or shaft-down configurations common in condenser units

Lau 00851916 Blower Wheel 320819-301 This pressure measurement tool utilizesThe Lau 00851916 Blower Wheel, a high performance A9 9A model, is an essential universal replacement blower wheel for belt driven HVAC configurations. Engineered with a Preslok wheel design, this 9 1 2" diameter by 9 1 2" wide component features a robust galvanized steel construction where the center disc is mechanically attached to each of the 43 blades. This double inlet blower wheel is built for versatile installation, supporting both CW CCW