I had a different brand of under-sink water filter which required canisters to be opened in order to periodically change the filters. Whenever I did the canisters leaked!
I bought Brondell to spare myself the anxiety and work and rework.
Installing the Brondell unit was straight forward, all the parts were included, the instructions clear and (best of all) no leaks!
A happy finding is the flow rate is greater than the prior brand.