Alder
Alder, a relative of Birch, is an open grained, light, relatively soft and medium-tough wood with a light reddish brown color. Small clusters of minor knots are common.
Cherry
Cherry is an elegant, multi-colored hardwood, which may contain small knots and pin holes. Natural or light stains accent these color variations. Cherry wood will darken or "mellow" with age.
MDF
Medium Density Fiberboard is an inexpensive and strong engineered wood that finishes with a tight, smooth surface and clean, sleek look.