The use of laminated veneer lumber (LVL) cores in GlassCraft’s plank-style doors should make them resistant to cracking and warping. The doors are available in 1 3/4-inch and 2 1/4-inch thicknesses and as single and double door units. Cores and veneers are made from mahogany or knotty alder and can be ordered with premium options that include straps, clavos, and speakeasy grilles. List price for the unfinished slab in the photo, including the options, is $1,880. GlassCraft Door Co., 800.766.2196, glasscraft.com