Impact Mounts 3 Tier Triple Glass Shelf Wall Mount for Cable Box Component DVR DVD Game Systems Under Tv Bracket (Triple Shelf) DVD brackets for audio/video components/Gaming systems Adjustable shef height. Back pillar length: 21.9"(557 mm) 5mm black tempered glass shelf Glass Size: 9.8 x 14.2" (250 x 350 mm) Support audio/video component up to 17.6LBS (8kgs)