Silenced Revolution Vector V2 & CarboAir Filter Extraction - Phonic Trap DuctingDesigned to Match Each Other Perfectly, the Revolution Vector and CarboAir are an Unbeatable Combination with Phonic Trap Ducting! The Silenced Revolution Vector and CarboAir kit gives you everything you need for unbeatable extraction. The Silenced Revolution Vector is internally the same as the non silenced version but in an acoustic housing. It's manufacturer System Air has gone to ever effort to make this fan as quiet and efficient as possible.