Medium-Density Fiberboard, (MDF), an engineered wood product made of softwood fibers, wax, and resin and formed into panels with the use of heat and pressure.

Microturbines are small rotary engines (usually fueled by natural gas) that provide on-site electricity generation.

Minimum Efficiency Reporting Value, (MERV), is a rating from 1 to 16 that measures a filter’s efficiency. A higher MERV means the air filter is more efficient at removing particles.