Innovation is what PROFORM does, and now turning to the radiator segment we have brought that innovation to a hot bed of exciting new products. Years of development led to two engineering and design breakthroughs: The Slim-Fit Core Design (US Pat. 9,212,598) and the Four-Corner Design (US Pat. D891,327 S). The former, the cog that led to the development of our signature line Slim-Fit Radiator Systems. The latter, a sleek design that looks great and allows for seamless integration of the radiator components into a unified system.