Designed to fit and be concealed behind 42.00 in. or larger flat screen displays. Can be installed in both new work and old work applications. Has 2 NEMA size openings for power, communication or A/V devices. Box is also equipped with a storage module that will accept active A/V equipment up to 6-7/8 x 9-1/8 in. (175 x 232 mm) (dimensions include wire and cables) in size.