bistroSchwank 2150 Marine Grade S/S bistroSchwank outdoor patio heater provides affordability and performance to keep your patio open during colder temperatures and create the perfect patio ambiance for your customers. Built with Marine Grade 316 stainless-steel, and available in single-stage and 2-stage models. BTU Input: 32K to 50K. Premium Performance Construction Marine Grade 316 stainless steel construction which stands up to the elements Schwank Patent Ceramic Tile Design Provide high intensity heat, with quick ramp up time and energy efficient heat distribution Available in single-stage and 2-stage Adaptable Control options include single/double/triple switch, patio panel and remote Efficient, Clean Direct Infrared Heating Performance Optional faceplate to add a modern feel Perfect for restaurant, hospitality, and retail applications