|   | ANP/301x245/4-way | External dimensions 301x245 mm, opening dimensions 181x125 mm, 4 directions air flow, effective area 0.015 m² | 
|   | ANP/301x245/4-way | 
| External dimensions 301x245 mm, opening dimensions 181x125 mm, 4 directions air flow, effective area 0.015 m² | 
| ANP/357x245/4-way | External dimensions 357x245 mm, opening dimensions 237x125 mm, 4 directions air flow, effective area 0.020 m² | 
|   | ANP/357x245/4-way | 
| External dimensions 357x245 mm, opening dimensions 237x125 mm, 4 directions air flow, effective area 0.020 m² | 
| ANP/357x301/4-way | External dimensions 357x301 mm, opening dimensions 237x181 mm, 4 directions air flow, effective area 0.025 m² | 
|   | ANP/357x301/4-way | 
| External dimensions 357x301 mm, opening dimensions 237x181 mm, 4 directions air flow, effective area 0.025 m² | 
| ANP/412x245/4-way | External dimensions 412x245 mm, opening dimensions 292x125 mm, 4 directions air flow, effective area 0.025 m² | 
|   | ANP/412x245/4-way | 
| External dimensions 412x245 mm, opening dimensions 292x125 mm, 4 directions air flow, effective area 0.025 m² | 
| ANP/412x301/4-way | External dimensions 412x301 mm, opening dimensions 292x181 mm, 4 directions air flow, effective area 0.033 m² | 
|   | ANP/412x301/4-way | 
| External dimensions 412x301 mm, opening dimensions 292x181 mm, 4 directions air flow, effective area 0.033 m² | 
| ANP/412x357/4-way | External dimensions 412x357 mm, opening dimensions 292x237 mm, 4 directions air flow, effective area 0.037 m² | 
|   | ANP/412x357/4-way | 
| External dimensions 412x357 mm, opening dimensions 292x237 mm, 4 directions air flow, effective area 0.037 m² | 
| ANP/469x245/4-way | External dimensions 469x245 mm, opening dimensions 349x125 mm, 4 directions air flow, effective area 0.033 m² | 
|   | ANP/469x245/4-way | 
| External dimensions 469x245 mm, opening dimensions 349x125 mm, 4 directions air flow, effective area 0.033 m² | 
| ANP/469x301/4-way | External dimensions 469x301 mm, opening dimensions 349x181 mm, 4 directions air flow, effective area 0.041 m² | 
|   | ANP/469x301/4-way | 
| External dimensions 469x301 mm, opening dimensions 349x181 mm, 4 directions air flow, effective area 0.041 m² | 
| ANP/469x357/4-way | External dimensions 469x357 mm, opening dimensions 349x237 mm, 4 directions air flow, effective area 0.047 m² | 
|   | ANP/469x357/4-way | 
| External dimensions 469x357 mm, opening dimensions 349x237 mm, 4 directions air flow, effective area 0.047 m² | 
| ANP/469x412/4-way | External dimensions 469x412 mm, opening dimensions 349x292 mm, 4 directions air flow, effective area 0.055 m² | 
|   | ANP/469x412/4-way | 
| External dimensions 469x412 mm, opening dimensions 349x292 mm, 4 directions air flow, effective area 0.055 m² | 
| ANP/498x245/4-way | External dimensions 498x245 mm, opening dimensions 378x125 mm, 4 directions air flow, effective area 0.037 m² | 
|   | ANP/498x245/4-way | 
| External dimensions 498x245 mm, opening dimensions 378x125 mm, 4 directions air flow, effective area 0.037 m² | 
| ANP/498x301/4-way | External dimensions 498x301 mm, opening dimensions 378x181 mm, 4 directions air flow, effective area 0.045 m² | 
|   | ANP/498x301/4-way | 
| External dimensions 498x301 mm, opening dimensions 378x181 mm, 4 directions air flow, effective area 0.045 m² | 
| ANP/498x357/4-way | External dimensions 498x357 mm, opening dimensions 378x237 mm, 4 directions air flow, effective area 0.051 m² | 
|   | ANP/498x357/4-way | 
| External dimensions 498x357 mm, opening dimensions 378x237 mm, 4 directions air flow, effective area 0.051 m² | 
| ANP/498x412/4-way | External dimensions 498x412 mm, opening dimensions 378x292 mm, 4 directions air flow, effective area 0.060 m² | 
|   | ANP/498x412/4-way | 
| External dimensions 498x412 mm, opening dimensions 378x292 mm, 4 directions air flow, effective area 0.060 m² | 
| ANP/498x469/4-way | External dimensions 498x469 mm, opening dimensions 378x349 mm, 4 directions air flow, effective area 0.070 m² | 
|   | ANP/498x469/4-way | 
| External dimensions 498x469 mm, opening dimensions 378x349 mm, 4 directions air flow, effective area 0.070 m² | 
| ANP/595x245/4-way | External dimensions 595x245 mm, opening dimensions 475x125 mm, 4 directions air flow, effective area 0.047 m² | 
|   | ANP/595x245/4-way | 
| External dimensions 595x245 mm, opening dimensions 475x125 mm, 4 directions air flow, effective area 0.047 m² | 
| ANP/595x301/4-way | External dimensions 595x301 mm, opening dimensions 475x181 mm, 4 directions air flow, effective area 0.060 m² | 
|   | ANP/595x301/4-way | 
| External dimensions 595x301 mm, opening dimensions 475x181 mm, 4 directions air flow, effective area 0.060 m² | 
| ANP/595x357/4-way | External dimensions 595x357 mm, opening dimensions 475x237 mm, 4 directions air flow, effective area 0.065 m² | 
|   | ANP/595x357/4-way | 
| External dimensions 595x357 mm, opening dimensions 475x237 mm, 4 directions air flow, effective area 0.065 m² | 
| ANP/595x412/4-way | External dimensions 595x412 mm, opening dimensions 475x292 mm, 4 directions air flow, effective area 0.080 m² | 
|   | ANP/595x412/4-way | 
| External dimensions 595x412 mm, opening dimensions 475x292 mm, 4 directions air flow, effective area 0.080 m² | 
| ANP/595x469/4-way | External dimensions 595x469 mm, opening dimensions 475x349 mm, 4 directions air flow, effective area 0.092 m² | 
|   | ANP/595x469/4-way | 
| External dimensions 595x469 mm, opening dimensions 475x349 mm, 4 directions air flow, effective area 0.092 m² | 
| ANP/595x498/4-way | External dimensions 595x498 mm, opening dimensions 475x378 mm, 4 directions air flow, effective area 0.098 m² | 
|   | ANP/595x498/4-way | 
| External dimensions 595x498 mm, opening dimensions 475x378 mm, 4 directions air flow, effective area 0.098 m² | 
| ANP/625x245/4-way | External dimensions 625x245 mm, opening dimensions 505x125 mm, 4 directions air flow, effective area 0.051 m² | 
|   | ANP/625x245/4-way | 
| External dimensions 625x245 mm, opening dimensions 505x125 mm, 4 directions air flow, effective area 0.051 m² | 
| ANP/625x301/4-way | External dimensions 625x301 mm, opening dimensions 505x181 mm, 4 directions air flow, effective area 0.063 m² | 
|   | ANP/625x301/4-way | 
| External dimensions 625x301 mm, opening dimensions 505x181 mm, 4 directions air flow, effective area 0.063 m² | 
| ANP/625x357/4-way | External dimensions 625x357 mm, opening dimensions 505x237 mm, 4 directions air flow, effective area 0.072 m² | 
|   | ANP/625x357/4-way | 
| External dimensions 625x357 mm, opening dimensions 505x237 mm, 4 directions air flow, effective area 0.072 m² | 
| ANP/625x412/4-way | External dimensions 625x412 mm, opening dimensions 505x292 mm, 4 directions air flow, effective area 0.086 m² | 
|   | ANP/625x412/4-way | 
| External dimensions 625x412 mm, opening dimensions 505x292 mm, 4 directions air flow, effective area 0.086 m² | 
| ANP/625x469/4-way | External dimensions 625x469 mm, opening dimensions 505x349 mm, 4 directions air flow, effective area 0.098 m² | 
|   | ANP/625x469/4-way | 
| External dimensions 625x469 mm, opening dimensions 505x349 mm, 4 directions air flow, effective area 0.098 m² | 
| ANP/625x498/4-way | External dimensions 625x498 mm, opening dimensions 505x378 mm, 4 directions air flow, effective area 0.103 m² | 
|   | ANP/625x498/4-way | 
| External dimensions 625x498 mm, opening dimensions 505x378 mm, 4 directions air flow, effective area 0.103 m² | 
| ANP/625x595/4-way | External dimensions 625x595 mm, opening dimensions 505x475 mm, 4 directions air flow, effective area 0.125 m² | 
|   | ANP/625x595/4-way | 
| External dimensions 625x595 mm, opening dimensions 505x475 mm, 4 directions air flow, effective area 0.125 m² |