Features and benefits in the MDW series of mini-diffusors are all the same as the MDF series, except all the units in this series are made of solid wood which is then stained and lacquered to furniture grade specifications. Each of the MDW series measures and weighs the same as the MDF series. Go to the product photo gallery for samples of our standard clear, oak, and walnut finishes. We can match any decor with a stain and finish of your choice. The MDW-13 is based on the prime number 13.