www.phcppros.com/articles/8484-modine-btp-unit-heater

Modine BTP Unit Heater
November 19, 2018
The Modine Model BTP offers the same functionality as the company’s PTP unit upgraded with factory-installed blower assemblies. The new BTP model is 82 percent thermally efficient and features a low profile design that allows quick and easy installations.
The BTP model is available in seven sizes, from 150,000 to 400,000 BTUs. It comes standard with a 409 stainless steel primary heat exchanger that is key for greenhouse use. The model is ELT certified for commercial and industrial use in the United States and Canada.
Modine