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Flexible Installation Options: Supports upflow and horizontal configurations to fit various home layouts
18K-30K Stages Variable Cabinet Size B Refrigerant R-454B Heat Source Electric Warranty 10 Year Parts
TEE & Coupling – Versatile fittings to route and connect 3/4" PVC lines
and dependable heating solution
25x20 Supply Plenum (D Cabinet) Lennox Flexible Installation Options: Supports upflowThis 16" x 20" x 36" R6 insulated supply plenum box is designed to distribute conditioned air efficiently throughout your home. Constructed with durable galvanized steel and lined with R6 foil faced insulation, it helps minimize energy loss, reduce system noise, and prevent condensation. Ideal for upflow HVAC systems, this plenum connects directly to your air handler or furnace, creating a sealed and insulated pathway for your ductwork.