FilterBuy Dirt Devil F66 (F-66) Allergen HEPA Filter with Foam Insert. Designed by FilterBuy to fit Dirt Devil Dirt Devil Featherlite Upright Model # UD70100. Replaces Dirt Devil F66 Part # 304708001. FilterBuy Premium Allergen Compatible HEPA Filter with Foam. Designed by FilterBuy to fit UD70100 Featherlite, UD70110 Vigor Tubro, and UD70105 Breeze Cyclonic Bagless. Premium Allergen Filter Designed by FilterBuy to replace Dirt Devil F66 (F-66) Part # 304708001. Vacuum FilterBuy: Breathe Better!