The 30 CONS/PKB at Vandenberg Space Force Base, California, has issued a commercial solicitation for commercial/institutional solid hardwood Twin XL bunkable bedframes, Twin XL commercial innerspring ... The 30 CONS/PKB at Vandenberg Space Force Base, California, has issued a commercial solicitation for commercial/institutional solid hardwood Twin XL bunkable bedframes, Twin XL commercial innerspring mattresses, and turn-key on-site delivery, assembly, and removal services for the Titian Dorm.