16 grit belts look intimidating, but they are what you need when you have a floor with an old shellac or lacquer finish that melts and completely coats finer sander belts. 16 grit is also great when you're dealing with old painted floors, especially porches. Older, thickly coated floors need this extra-coarse paper, not to sand the wood, but to scrape off all that molten finish. 16 grit belts will hold waaaay more of that gooey mess than a 36 grit. Which means you will use fewer of them. We've seen people use seven or eight finer belts to do the work of one coarse belt because nobody told them that 16 grit even existed! We've included some photos of what a properly used 16 grit belt should look like; that belt has done it's job!
Here's the thing though; don't expect 16 grit to remove all the finish, and sand the wood to bare. 16 grit was not designed to sand down to bare wood! Think of it more as a "pre-sanding" grit. It was designed to remove enough finish so that that finer grits like 24 and grit can sand the wood clean. Sure, 16 grit will eventually sand wood bare, but it will leave the wood so deeply scratched that it will take multiple passes at 24 and possibly even again at 36 to remove all that damage. And you should never need more than one pass at any grit. So, save yourself; let the 16 grit remove 2/3 of your floor finish, then proceed through 24 grit and then 36 grit to get the wood fully bare, then sand with 60 grit and then 80 grit to make it smooth.
8" wide, 19" circumference designed for Clarke EZ-8 Expandable drum sander