Mirka Iridium 3 x 5 Grip 54H 320 Sandpaper Sheets are fine-grit abrasive sheets built for finish sanding and surface preparation. This is a sandpaper sheet designed for fine sanding on wood, filler, primers, and painted surfaces where a controlled scratch pattern matters. Model Number: 24-35M-320. If you need a 3 x 5 inch sheet with dust-extraction holes and a finer 320 grit cut, this is the kind of consumable that helps you clean up a surface before the next step instead of fighting deep scratches left behind by a coarser abrasive.

The core buying points here are straightforward: 320 grit, a 3 x 5 inch format, and a 54-hole pattern with a grip backing. On the job, that means this sheet is aimed more at refinement than heavy material removal. It is a good fit when you are between shaping and final finishing, knocking down minor surface imperfections, feathering edges, or preparing primer and paint for another coat.

The 3 x 5 inch size is useful because it works in smaller sanding areas where a full-size sheet or larger disc is overkill. That makes these sheets practical for trim work, patch areas, spot repairs, cabinet parts, and other detail-oriented sanding tasks. For shops and technicians who go through abrasives steadily, the pack quantity of 50 also makes sense because you are not buying a one-off sheet at a time.

The grip-style design matters because it is made to attach quickly to compatible sanding pads or hand blocks that use this format. Fast attachment and removal saves time when you are stepping through grit changes, and the 54-hole layout is there to support dust extraction on matching tools or pads. Better dust management usually means the abrasive stays cleaner longer and gives you a more consistent finish.

Mirka positions Iridium abrasives for users who care about surface quality, not just removing stock fast. In practical terms, this Mirka sanding abrasive is best suited to painters, body shop techs, woodworkers, finish carpenters, and serious DIY users who are already paying attention to grit progression and finish quality. If your work depends on a clean final surface before paint, stain, or clear coat, a fine sheet like this earns its keep.

If you are deciding whether this is the right abrasive, the main question is not whether it sands aggressively. It is whether you need a finer sanding sheet that fits a 3 x 5 grip pad and uses a 54-hole dust pattern. If that matches your setup and your stage of work, the Mirka Iridium 3 x 5 Grip 54H 320 Sandpaper Sheets are a smart consumable to keep on hand.

Mirka Iridium 3 x 5 Grip 54H 320 Sandpaper Sheets Keep Finish Work Clean

This is the kind of abrasive you buy when surface quality matters more than brute-force stock removal.

• Who it's for: Painters, finish carpenters, woodworkers, and body shop users who need a fine sanding sheet for prep and refinement work.
• Why it stands out: The 3 x 5 size, grip backing, 54-hole extraction pattern, and 320 grit make it a practical consumable for controlled finish sanding on compatible pads.
• Worth knowing: This is a specialty finishing abrasive, not a rough sanding sheet. Make sure your pad uses the 3 x 5 format and 54-hole layout if you want the best fit and dust pickup.

• What grit is this Mirka sheet? It is 320 grit, which is generally used for fine sanding and surface refinement.
• What size is the sheet? The sheet size is 3 x 5 inches.
• Does it support dust extraction? Yes. It uses a 54-hole pattern intended for compatible dust-extraction sanding pads.
• What type of backing does it use? It is listed as a grip sheet, which is intended for compatible grip or hook-and-loop style sanding interfaces.