Rheem AP24551 Tankless Modular Rack — purpose-built mounting solution for Rheem tankless water heater systems. This heavy-duty rack provides stable, code-compliant installation support for modular tankless units in commercial and residential applications. Engineered for corrosion resistance and designed to accommodate standard Rheem tankless heater dimensions. Simplifies installation logistics by consolidating multiple units into a compact footprint, reducing on-site assembly time and labor costs. Wall-mount or floor-mount configuration options support flexible deployment in utility rooms, mechanical closets, or equipment rooms. Fully compatible with Rheem's modular tankless lineup — verify specific model compatibility before ordering.