Jamb Lock is a patented, door shim, that is the fastest and easiest way to hang an interior door. It accommodates both 4 9/16" and 4 13/16" jamb sizes, (2x4 walls with 1/2" or 5/8" sheetrock), at 1/20th of an inch increments. To hang a door simply attach shims to jamb, then to wall opening, next align jamb and lock into place by simply pushing a pin.. The purpose of this web site is to find investors or manufacturers who believe as we do that this product has merit and would do well in the retail market. Jamb Lock would allow anyone, no matter what their skill level to successfully hang a door. Jamb Lock advantages are 1. Hang a door in less time. 2. Lock jamb into place by simply pushing a pin. 3. No wood shims to cut before casing door. 4. Easily re-adjustable. 5. Gives reveal points for casing. 6. No nail holes to putty on jamb. 7. Can be applied with pneumatic nailer for faster installation. Please look over the information we provide on this web site. Give us a call or drop us an e-mail if we can be of further assistance.