This type of CCRs use Sumitomo cold heads and the cooling power is 1.0W@4K.
 
                
| System Description | Temperature Range (K) | Manufacturer | Available Instruments | System Drawing | 
|---|---|---|---|---|
| CCR-20 | 4-325 | Janis | All | Drawing | 
| CCR-21 | 4-325 | Janis | All | Drawing | 
| CCR-22 | 4-325 | Janis | All | Drawing | 
| CCR-23 | 4-325 | Janis | All | Drawing | 
| CCR-24 | 4-325 | Janis | All | Drawing |