[Specifications] Hardened Steel Construction Made of steel with a red powder coat finish Secures the locking handle of a roll up door in the downward/locked position Works on storage containers, trailers, and box trucks with roll up doors No Mounting Required Fits all Whiting and TODCO door hardware Built in high security barrel lock system including 2 keys Fits up to 5" height for handle Fits up to 1.25" handle thickness [Features] Versatile Roll Up Door Latch: Equipment locks heavy duty rolling door lock is recommended for storage containers, trailers, and box trucks with roll-up style doors. This premium keyed lock weighs 9 lbs and fits handles up to 5" high and 1.25 thick. Maximum Security: This premium door lock system secures the locking handle of a roll up door in the downward/locked position, and features a tamper-resistant design for ultimate peace of mind while youre away. Keyed Security Lock: The built-in high security barrel lock system includes 2 keys. Our exclusive keyed alike option keeps your key code on file, allowing future locks to be accessed with a single key. High Quality: Distinguished by its signature red finish, every lock is protected by a steel-locking structure that can withstand thousands of pounds of force. But it doesn’t stop there! Each device is powder coated before a series of quality assurance checks to ensure security and reliability. Easy Operation: No mounting required. Secure the handle of any roll-up door by sliding the lock behind the door handle, adjusting the u-lock plate to fit your specific door latch, and locking it into place.   [Installation Steps] Step 1 Slide the main locking body of the heavy duty rolling door lock behind the door's locking arm. Make sure to move as far to the left as the lock and arm allows. Step 2 Take the "U" shape part of the lock and slide it over the door's lever. Make sure it goes into the main body and slide the "U" shape bar as right as possible. Once in line press the lock mechanism inward to lock the two pieces in place.   [Package Includes] 1x ‎Heavy Duty Rolling Door Lock with 2 keys (As Pics Shown)