A:Answer THE KRFF302 model is taller with more has more freezer and refrigerator capacity and deeper doors. The 300 model has 1 fixed, conventional glass shelf and 4 adjustable, half-width MicroEtch Spill Control Shelves; The 302 model's shelves are all MicroEtch, with one being an adjustable half-width tuck, one fixed full-width and 3 adjustable half-width,