What size is a Lennox hp18-511-5p?

The Lennox HP18-511-5P is a heat pump with a nominal capacity of 1.5 tons, which is equivalent to 18,000 BTUs. It typically fits within standard residential HVAC systems and is designed for efficient heating and cooling in various climates. The physical dimensions may vary, but it's essential to refer to the manufacturer's specifications for exact measurements.