Designed to fit Clark, Hawk, N.A.C.E. Upright • Model Names: N.A.C.E. --DM1400 DM1800, North American Cleaning Equipment - N.A.C.E. Fusion,FiltraVac, Filtrapac,Hawk,Pursuit, CombiVac • Model Numbers: UVT14, UVT18,18”, 14” Uprights, 514, 517, 518, 614, 618, Filtra Vac 14 & 18, FiltraPac Backpack, Hawk UVT14 & UVT18, Pursuit 14"" & 18"" Upright, N.A.C.E. DM1400 & DM1800 • Envirocare Premium Aftermarket #ECC514 • Envirocare Parts designed to fit with or replace genuine original (OEM) manufacture part numbers: 50721,50704A-2,5430A,53430A • Filtration: Electrostatic Micro Filtration. • 1 Package of -- 10 Allergen Bags • Dimensions: Bag Size 13 1/2"" L X 6"" W Cardboard 6 1/2"" L X 5 1/2"" W @ widest Hole Diameter 2 1/4""