NuTone VX3918STD OEM 8-Gallon Central Vacuum Bags (3 Pack) – For VX550 & VX1000
Part Number: VX3918STD (NuTone OEM). Note: VX3918STD isonly for the VX550 / VX1000 families; it will not fit 6-gallon systems (VX3916). :contentReference[oaicite:12]{index=12}. Only for NuTone VX550 / VX1000 series (including VX550C / VX1000C).