The lush greenery mats snap together to create green walls, to cover lattice, exterior walls, rooftop accent, etc. Pachysandra greenery has a unique shape, with a more relaxed look than boxwood. The leaf sprays extend 2-3 inches from backing grid. The mat backing can be trimmed to fit desired space. Each case of 24 12" x 12" mats = 24 square feet of greenery