United Spas 4.0kW FloThru Heater [15" x 2"] [230V] (HU114K) gridcontrols A grate with frame is

A grate with frame is useful because it helps cover the suction opening while providing the support needed for secure installation and proper alignment

Useful when original manifold and grid components are worn or damaged

In a quality rebuild

Auxiliary topside panel for compatible AX40 systems

Supports a more complete trap assembly rebuild

United Spas 4.0kW FloThru Heater [15" x 2"] [230V] (HU114K) gridcontrols A grate with frame isThe United Spas Heater [FloThru 15" 4. 0kW 230V] is a replacement spa heater designed for compatible United Spas equipment. It supports reliable water heating in spa systems where the original heater has failed, corroded, or is no longer maintaining proper temperature performance. Before installation, verify the voltage, kilowatt rating, plumbing size, flow style, and connection layout against the existing heater assembly. Matching these details helps