Hi Jill,
Sorry no one answered you. It looks like there was a miscommunication and no one answered previously. Polly is correct, the hoop size in mm for the Snap Hoop LM9 9.5" x 14" is about 240 x 360. It is the biggest hoop recommended by DIME, for the Babylock Altair. I'm not sure what other hoop you heard about, that was bigger for that machine. But we don't recommend going any bigger. Please let us know if you have any other questions. Have a good day!
Jill L.
I have the 9.5 X 14 snap hoop for my Babylock Altair. I tried to do a quilt pattern that was 9.5 x 9.5. I was instructed to use a bigger hoop. It did allow me to do a 9" size. What is the true and accurate size that can be done with this size hoop>