When seaming is required in an installation, Armstrong Flooring communicates pattern matching in two ways: true design repeat (length, width and drop) and the “economy match”. For best results, we recommend that the true design repeat be used to match the pattern. However, in some installations, the economy match can be used with satisfactory results. While the economy match is not a true match, it can be used where 6′ or 12′ material is installed with a small fill. Please note that when multiple 6′ or 12′ widths or a fill wider than 6′ for 12′ materials or 3′ for 6′ materials are required, always refer to the true design repeat.