EnviroCare Replacement Vacuum Cleaner Dust bags Designed to Fit VX3918 Type Nutone Broan Central Vacuum Cleaner Bags 6 Gallons Model# VX550 VX1000, VX475, VX3918, VX3916, 784891776717 12 Pack | | Replaces OEM Part Numbers VX391-8, VX3918, VX3916 | | 99.7% Filtration | | Manufactured by EnviroCare | |