 
         
        | Model | Length (mm) | Width (mm) | Thickness (mm) | Rated air velocity (m/s) | I.N.P (Pa) | CMH | 
| RT-PBN7710 | 595 | 595 | 10/21 | 4.0 | <2 | 5400 | 
| RT-PBN5710 | 495 | 595 | 10/21 | 4.0 | <2 | 5000 | 
| RT-PBN5510 | 495 | 495 | 10/21 | 4.0 | <2 | 4500 | 
| RT-PBN1710 | 295 | 595 | 10/21 | 4.0 | <2 | 3000 | 
| Remark: customized specification is acceptable. | ||||||