The Mirka 24-38P-320 Iridium sandpaper sheet is a perforated abrasive sheet for fine sanding and surface preparation. This is a sandpaper sheet designed for finish sanding on compatible grip-backed sanding tools and sanding blocks. Model Number: 24-38P-320. With a 2.75 x 15.75 inch size, 320 grit abrasive, and 140-hole pattern, it is aimed at users who want clean sheet changes and better dust control during detail sanding work.

What matters here is how the spec package works together. The 320 grit is suited to lighter material removal and surface refinement rather than aggressive stock removal, so it makes sense when you are stepping through a sanding process and want a cleaner finish before coating, paint, or final polish stages. The 2.75 x 15.75 inch format also gives you a long, narrow sheet shape that fits tools and hand applications that use this strip-style size.

The grip-backed design keeps the sheet easy to install and remove on compatible hook-and-loop style platforms. That saves time when you are changing worn sheets or moving between grit steps. For anyone doing repetitive sanding, that matters more than it sounds on paper because quicker changes mean less downtime and less temptation to keep using a dull abrasive past the point where it is cutting efficiently.

The 140-hole perforation pattern is a practical feature, especially if your sanding setup uses dust extraction. More effective dust pull helps keep the abrasive face from loading as quickly, which can support a more even sanding result and better visibility of the work surface. On finish sanding jobs, that can help reduce random deep scratches caused by trapped debris riding under the sheet.

This Mirka abrasive is sold in a pack of 50, which makes sense for shops and regular users who burn through sheets during prep and finishing work. It is a better fit for painters, finish carpenters, refinishers, body shop users, and serious DIYers who already know the exact sheet size and hole pattern they need. If your setup takes 2.75 x 15.75 inch grip sheets with a perforated dust-extraction layout, this is the kind of consumable you buy to keep the work moving instead of stopping to hunt for the right abrasive every few jobs.

Mirka 24-38P-320 Iridium Sandpaper Sheet Keeps Fine Prep Simple

If you already know your sander takes this size and hole pattern, this is the kind of abrasive that makes finish prep quicker and less annoying.

• Who it's for: Painters, refinishers, woodworkers, and detail sanders running a compatible grip-backed sheet system.
• Why it stands out: The combination of 320 grit, grip backing, and a 140-hole perforation pattern is aimed at clean finish work with efficient dust extraction.
• Worth knowing: This is a format-specific sanding sheet, so size, backing style, and hole pattern need to match your setup before you buy.

• What grit is this sanding sheet? It is 320 grit, which is generally used for fine sanding and surface refinement.
• How many sheets come in the pack? This item is sold as a pack of 50 sheets.
• What size are the sheets? Each sheet measures 2.75 x 15.75 inches.
• Does this sheet support dust extraction? Yes. It has a perforated 140-hole pattern intended for compatible dust-extraction sanding setups.