Typhoon III RO/DI replacement filters

[belamber]

Is anybody else here in canada using the Typhoon III RO/DI system from www.airwaterice.com? If so, where do you get your replacement filters? The site recommends a 10 micron sediment, 5 micron carbon block, and a 1 micron carbon or sediment. All at 10" x 2.5". The RO membrane is a Dow Filmtec 75gpd and is 12" x 1.8". I looked at spectrapure, but they don't seem to have a 10u filter and most of their membranes are 12" x 2".