The Armstrong line of WoodWorks Grille ceiling systems is now available with both vertical and horizontal blade design options and a Tegular edge for easy installation in standard suspension systems. New WoodWorks Grille Tegular panels are offered in 2 by 2-foot and 2 by 4-foot sizes, and in four standard finishes. The new panels provide the opportunity to create linear and checkerboard patterns in either horizontal or vertical blade configurations.