The lock instructions for installation were spot on. The hardware provided was of good quality. It fits standard doors and I made no adjustments.  The installation was quick and easy. The pairing instructions had me confused at first but after a second read and review of a You Tube video, pairing my smart phone to the Halo smart lock was a breeze. I am very happy with the lock. I installed it on my exterior garage door. I  feel smarter already. My neighbor came over and she is now strongly considering Halo Smart Locks for her home. Nice Lock !