Bilco® Pan-Type Floor Door. Doors allow design professionals to provide concealed access in decorative flooring materials. The pan-type cover will accept a wide variety of architectural materials, allowing the doors to be used in virtually any application. Whether it’s ceramic tile, hardwood, or even granite, each TER door is precisely engineered with lift assistance to afford the user with easy, one-hand operation. Type TER floor access doors feature aluminum construction and are available in a number of standard single leaf and double leaf (Type TRD) sizes. Special sizes can also be specified for unique access requirements.