Amazon has the Gladiator Ready-to-Assemble Full-Door Wall GearBox (‎GAWG28FVEW, Hammered White) on sale for $100 with free shipping. Dimensions: ‎12"D x 28"W x 28"H. Holds up to 150 lbs. per cabinet and 40 lbs. per shelf. 

• Also on sale: Gladiator Ready-to-Assemble 3/4 Door Wall GearBox for $90