Acrylic Countertop Display Case Tower. The Rectangular Countertop Display Case has 3 stationary shelves that are removable. The 3 shelf countertop display case tower is locking and has a single door and is made from crystal clear acrylic. This countertop acrylic display case is also called a countertop acrylic showcase with 3 shelves. Keep your merchandise safe behind lock and key with this acrylic display case, while featuring it on your countertop.