High to Medium efficiency 4V Box style are mini pleated high velocity filters. These filters operate at very air flow rates up to 3000 ft³/min and are considered the best replacements for conventional box style fine filters. This also features plastic frame construction and so is a "metal free" filter that is fully incinerable. HVP are available in 4V and 2V configuration ranging from MERV 12, 13, 14 and 15. The V shaped arrangement allows more air flow per filter than a standard filter replacement and can save up to 30 % on energy. Filters are light weight and its fully plastic body makes it incinerable as well.