what size is Kodak 101 film, will Ilford ULF 9cm long roll work

Some old Kodak cameras shot type 101 roll film for an image listed as 3 1/2 x 3 1/2 inches. I don't have a roll to measure so I ask if any of you smart helpful people out there know what is/was the actual width of type 101 film. Wondering if the current Ilford ULF "9cm" wide film would work or if I'd have to slit 5 inch?
Thank you,
Robert

101 has a gate size of just under 90mm (88 something) so when you get the spools and backing paper it would be worth a try.

Looks like 101 was the same frame and film width as 106 (the reference I found doesn't give any spool dimensions or frames per roll). The 101 went in a No. 2 Bullet (and whatever others), while the 106 was for a No. 2 Eureka.