Backward curved rectangular duct fans

Backward curved rectangular duct fans

Backward curved rectangular duct fans

Ideal for transporting even contaminated air

Backward curved rectangular duct fans

Helios centrifugal rectangular duct fans with backward curved impeller blades for conveying contaminated air. Particularly easy to service due to the retractable motor-impeller unit. High-performance impellers with high efficiency. Compact design, low space requirement, linear rectangular duct throughflow. Optionally available with EC technology and as SKR type with silenced AcousticLine version. 

Required air flow (Vmax) (43)
Duct dimension (cm)
Technology
43
Power-Type
43
Sound-Insulated
Maximum speed RPM (min-1) (43)

Start a detailed selection of this product category here and find suitable accessories.

Ref.-No. Type Vmax (m³/h) Duct dimension (cm)Sound-insulated Actions
08584 KRD 355/4/60/35 284060/35
08694 KRD 450/4/70/40 583070/40
08643 KRD 500/4/80/50 A 846080/50
06147 KRD 560/4/80/50 1197080/50
08842 KRD 560/6/80/50 746080/50
07590 KRD EC 355/60/30 438060/30
07591 KRD EC 400/60/35 458060/35
08173 KRD EC 450/70/40 752070/40
08174 KRD EC 500/80/50 A 799080/50
06128 KRD EC 500/80/50 B 908080/50
08167 KRD EC 560/100/50 A 9370100/50
08175 KRD EC 560/100/50 B 13600100/50yes
08885 KRW 180/2/30/15 54030/15
08886 KRW 225/2/40/20 102040/20
08873 KRW 225/2/50/25 116050/25
08692 KRW 355/4/60/35 360060/35
06150 KRW 400/4/70/40 497070/40
06151 KRW 450/4/70/40 665070/40
06152 KRW 500/4/80/50 970080/50
08168 KRW EC 180/30/15 72030/15
08169 KRW EC 225/40/20 120040/20
08170 KRW EC 315/50/25 A 121050/25
07589 KRW EC 315/50/25 B 225050/25
08171 KRW EC 355/60/30 296060/30
08172 KRW EC 400/60/35 410060/35
06127 KRW EC 450/70/40 557070/40
08181 SKRD 355/4/60/35 280060/35yes
08196 SKRD 450/4/70/40 543070/40yes
08198 SKRD 500/4/80/50 805080/50yes
08197 SKRD 500/6/70/40 462070/40yes
08199 SKRD 560/6/80/50 760080/50yes
08297 SKRD EC 400/60/35 458060/35yes
08178 SKRD EC 450/70/40 A 746070/40yes
08299 SKRD EC 500/80/50 A 799080/50yes
08179 SKRD EC 500/80/50 B 876080/50yes
06130 SKRD EC 560/100/50 A 9370100/50yes
08180 SKRD EC 560/100/50 B 12900100/50yes
08681 SKRW 355/4/60/35 358060/35yes
06143 SKRW 400/4/70/40 494070/40yes
07588 SKRW EC 315/50/25 A 127050/25yes
08182 SKRW EC 315/50/25 B 217050/25yes
08177 SKRW EC 400/60/35 396060/35yes
06129 SKRW EC 450/70/40 539070/40yes