We qualify two different kinds of Grade 1 Locks (American & Import). The heaviest duty Grade 1 locks are American Made. These locks are constructed with better metals in the chassis of the locks. These locks are recommended for higher use door and/or high vandalism/abused doors. The Import are good for moderate to high use and moderate abuse. (Daily Uses American - 150+ per day, Import - 75-150 per day)

Similar to Grade 1 we have a two qualifications (American & Import). The quality difference is not as noticable between the these two. The grade two are generally used for interior doors making the vandalism part not as much as a factor. (Daily uses 1-75 per day)