Features and benefits in the MDW series of mini-diffusors are all the same as the MDW series, except all the units in this series are made of solid wood, which is then stained and lacquered to furniture grade specifications. Numerous staining options are available. Consult us for any decor matching stain request. Each of the MDW series measures and weighs 40 pounds and different size options can be accommodated. The MDW series is based on the prime number 7.