AirVac CT14DX Belt (single) AirVac CT14DX In Stock Ships Same Day Free Order Tracking Genuine geared belt for AirVacr power nozzel model CT14DX. The CT14DX is manufactured by Centec Systems and has the belt number listed in the manual as EB24010. This belt is also known as belt 20-5285 or 46-3300-03. Replace this belt every 12 months to ensure optimum performance.