Standard Tray Rack for Uncovered Trays or 8 Assorted Colors "B" Trays or. 4 Assorted Colors "B" Trays. Standard Tray Rack for Uncovered Trays.This Products is compatible with "B" Size Dental Trays (Uncovered) meaning Trays that are without a cover. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Dental Supplies\Other Medical, Lab & Dental Supplies". The seller is "densup_50" and is located in this country: US. This item can be shipped to United States.