Hello, There is no problem using the Pylex 50 (10555) without a 24'' extension (10571) in your area. It's available online and in-store at The Home Depot.
https://www.homedepot.ca/product/pylex-24-inch-extensions-for-adjustable/1000746286
https://www.homedepot.ca/product/pylex-vis-de-fondation-ajustable-de-50-pouces/1000746285
Thanks