Display/storage case for graded cards

I'm looking for a custom built display/storage case for my graded cards. The purpose of the case is to both display and store up to 20 cards. It should be made of plastic for durability and convenience. This case should ensure that the cards can be properly secured and featured so that they can be easily viewed. The right kind of design will need to be chosen for maximum impact when showcasing my graded cards. An experienced craftsman is needed to make sure the case is well made with all the right features.