Mirka Iridium 3" x 4" Grip Vacuum File Board, 24-641 Series

Product Overview

Mirka Iridium 3" × 4" Perforated Grip 36‑Hole Sanding Strips (24‑641 Series) are premium high‑performance sanding strips engineered for fast cutting, long life, and exceptional dust extraction. Designed for universal sanding across automotive, marine, woodworking, composite, and industrial applications, Iridium delivers a smoother finish with fewer sanding steps.

These Iridium strips fit popular 3" × 4" rectangular sanders including the Mirka DEOS 343X, Mirka MR‑34, Mirka MR‑34DB, and similar jitterbug‑style sanders equipped with a grip (hook & loop) backup pad.

Iridium uses a premium ceramic and aluminum oxide grain blend for fast, efficient cutting, providing an aggressive initial cut and maintaining sharpness throughout the sanding process. A dust‑repellent precision coating reduces clogging and pilling, keeping the abrasive cutting clean longer and improving finish consistency.

The advanced low VOC resin system enhances grain adhesion, while the flexible latex C‑paper backing provides excellent durability and control. The optimized 36‑hole pattern maximizes dust extraction, creating a cleaner work environment and extending abrasive life.

Packaging: 50 perforated strips per box
Grit Range: 80, 120, 150, 180, 240, 320, 400

Key Features & Benefits

• Premium ceramic + aluminum oxide grain blend for fast, efficient cutting
• Dust‑repellent precision coating reduces clogging and pilling
• 36‑hole perforated pattern for excellent dust extraction
• Flexible latex C‑paper backing for durability and control
• Low VOC resin system improves grain adhesion and safety
• No alignment required — strips attach instantly and securely
• Compatible with Mirka DEOS 343X, MR‑34, MR‑34DB, and similar 3" × 4" sanders
• Excellent performance on soft and hard surfaces

SMSDistributors.com Expert Notes

Mirka Iridium 3" × 4" Strips are ideal for technicians who need precision sanding on small surfaces, profiles, edges, and tight areas. The ceramic/aluminum oxide blend provides a noticeably more aggressive initial cut compared to standard aluminum oxide strips, making Iridium perfect for spot repair, leveling filler, paint removal, and intermediate sanding.

The dust‑repellent precision coating keeps the abrasive cutting clean longer, especially on primers, paints, and composite materials. Combined with the optimized 36‑hole pattern, Iridium strips offer excellent dust extraction performance for compact rectangular sanders.

Iridium’s flexible latex C‑paper backing maintains strong grain adhesion even under heavy use, and the strips perform exceptionally well on both soft and hard surfaces. For shops looking to reduce sanding steps, improve consistency, and increase abrasive life, Iridium is one of Mirka’s most advanced sanding strip families.

Technical Specifications

• Grain: Ceramic + Aluminum Oxide
• Color: Gray
• Attachment: Grip (hook & loop)
• Backing: Latex C‑weight paper
• Bonding: Low VOC resin system
• Grits: 80, 120, 150, 180, 240, 320, 400
• Coating: Semi‑open
• Hole Pattern: 36‑hole
• Strip Size: 3" × 4" rectangular format
• Quantity: 50 strips per box

Grit Selection Guide

• 80–120 grit: Heavy stock removal, shaping, paint removal
• 150–180 grit: Leveling filler, intermediate sanding
• 240–320 grit: Surface prep, smoothing wood and composites
• 400 grit: Pre‑finish sanding, primer prep

Best For

• Automotive spot repair and refinishing
• Marine gelcoat and composite sanding
• Woodworking and furniture finishing
• Paint removal and surface preparation
• Solid surface and countertop fabrication
• General sanding across soft and hard materials

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Mirka Iridium

About Us

SMSDistributors.com is an authorized Mirka distributor supplying professional‑grade abrasives, sanding tools, and surface preparation products for automotive, marine, woodworking, and industrial applications. With over 15 years of experience, we provide fast shipping, expert support, and reliable products trusted by professionals nationwide.

Category: Mirka, Iridium, Sanding Strips, Ceramic Abrasives, Rectangular Sanding Sheets