Shop Vac Backpack BP20TS High Efficiency Filter Bags 5 Pack 91917-10. 

The Shop-Vac Back Pack Collection Filter bags are designed for the Shop-Vac back pack vacuum number 2850010 model. 

Also fits: BP20TS and Dayton 4TR17.  

Made for dry pickup only and for industrial use. 

Package includes 5 disposable filter bags per pack. 

Manufacturer Part Number: 91917-10.    

SV-9191710