Genuine Dirt Devil Style 7 Belt Dirt Devil 3400615001 In Stock Ships Same Day Free Order Tracking Package of (2) Genuine Dirt Devil Style 7 belts, Dirt Devil part number 3400615001 . The Dirt Devil Style 7 belt fits all Dirt Devil Room Mate and PowerGlide models. Also fits Dirt Devil Easy Steamer Deluxe and Vision Easy Steamer models. I t is recommended that you change this belt every 3 to 6 months to ensure optimum preformance.