In 2007 Monarch part numbers went through a conversion as described below.
| OLD | NEW | DESCRIPTION |
| BA | EO | Exit Only, No Outside Trim |
| DT | no change | - |
| PULL ONLY | DT | Dummy Trim |
| C | no change | - |
| P | NL | Night Latch |
| T | TP | Thumbpiece |
| K | no change | - |
| K LS/LK | K-BE | Knob with Blank Escutcheon |
| K-DT | no change | - |
| K-NL | no change | - |
| L | no change | - |
| L LS/LK | L-BE | Lever with Blank Escutcheon |
| L-DT | no change | - |
| L-NL | no change | - |
| SL | TL | Thumb Lever |
| SLP | TLP | Thumb Lever w/Pull |
| BE | EO | EO Blank Trim Plate (specify with trim series) |
| KIK | no change | - |
| KIK LS/LK | KIK-BE | Key in Knob with Blank Escutcheon |
| KIK-NL | no change | - |
| KIL | no change | - |
| KIL LS/LK | BE | Key in Lever with Blank Escutcheon |
| KIL-NL | no change | - |
| KIL W/IC | KIL-IC | Key in Lever with IC core |
| ST | 816 | New trim series 816 |
Table1: Monarch function changes
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