| Model Number | AC-R53 AC-R55 | 
| Application | 2U / 3U Rackmount (Width 17.2") | 
| Dimension | 26” | 
| Extension | 26.5~36.4" | 
| Type | Quick-Release Rail Set | 
| Max. Load | 80kgs | 
| Handle | N/A | 
| Inner Rail | Yes | 
| Outer Rail | Yes | 
| Square-hole to Round-hole Converter | Yes (AC-R53) N/A (AC-R55) | 
| Mechanical | Ball-Bearing | 
| Package | Single packing | 
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