Hoover Vac Type Z Vacuum Bags Microfiltration with Closure -10 Pack 10 Hoover Type Z Vacuum Bags made by Envirocare Replaces Part #4010075Z, 4010100Z Enirocare Micro Filtration Bags Trap 99.7% of Microscopic Particles and Allergens A Must for Allergy and Asthma Sufferers EnviroCare Premium aftermarket Part # 857