The ASI 3801-36 meets this requirement exactly

These grab bars feature slotted tenon plates for mounting

Fit most standard roll paper towel dispensers

Bulk flat-pack box for easy storage and dispensing

Holds: 450 mL

Purell Advanced Hand Sanitizer Soothing Gel Refill, Bag-In-Box, 800 Ml - GOJ965606EA Capacity-800 mL The ASI 3801-36 meets thisFor 800 mL Bag in Box Dispenser (sold separately). Kills 99. 9% of most germs instantly. For 800 mL Bag in Box Dispenser (sold separately). Kills 99. 9% of most germs instantly. Hand Sanitizers Type: Gel; Color(s): Clear; For Use With: 800 mL Bag in Box Dispenser; Capacity (Volume): 800 mL.