For securely "dogging" (fastening) deck hatches. With a 3" cam. Perko flush mounted hatch dogs are a great way to secure cockpit hatches, doors and lockers. The flush design allows the rattle-free handle to fold out of the way—safe from becoming a trip hazard. To open a hatch, flip up the handle and rotate the cam to dis-engage the strike and lift; the solid T-handle provides a 2-3 finger hold for lifting larger hatches or locker covers with comfort. Chrome-plated bronze construction offers corrosion resistance and O-ring seals help to keep moisture out of the locker. The 3" cam adjusts using stainless steel locking nuts to fine-tune the strike engagement and ensure a proper seal on hatch gaskets. "Dog" hatches securely and rattle-free with Perko rectangular flange flush hatch dogs. Key Features Flush rattle-free hatch dog secures cockpit hatches, lockers, doors and more Folding T-handle provides 2-3 finger pull for larger hatches O-ring seals to prevent moisture intrusion 3" adjustable cam that is compatible with 1 1/4"—2" thick panels 2" max hatch thickness Counter-sunk mounting holes for flat or oval head screws (available in a smooth flange and concealed fastener version Non locking (available in locking version)