The filler is used as a border around the room so as not to cut into the design. The 3-06 can also be used since the design is only 3”. Molded fillers add an extra elegance to a room and goes between the design and the filler. Send the measurement of your room in a diagram and let us do a new diagram that will help your installer and we'll have prices for your whole order. See below for our Molded Fillers, Friezes, Medallion and Ribbon Design.