MB5501SeaSucker Large Dry Box - Horizontal Mount Model: MB5501 This Dry Box is big enough for your wallet, cell phone, camera, etc. It seals tight to keep water out, and it holds firmly to your dash or other horizontal surface with our powerful 4.5" SeaSucker. Two clips snap tight to keep the lid closed. Specifications Total Size8.25 in wide, 4.5 in deep, 6.5 in tallDry Box Storage7.5 in x 3.5 in x 3.5 inVacuum Mount120lb pull-strength rated 4.5 in vacuum mount