Mirka Iridium 2.75" x 8" and 16" Perforated Grip File Board, 24-38P Series

Product Overview

Mirka Iridium 2.75" × 8" and 2.75" × 16" Perforated Grip Sanding File Board Strips (24‑38P 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.

Each strip is 2.75" × 16" and features a center perforation, allowing it to be quickly torn into two 2.75" × 8" strips. This makes the 24‑38P Series compatible with both 8" and 16" long‑board sanders and hand blocks.

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 multi‑hole pattern maximizes dust extraction, creating a cleaner work environment and extending abrasive life.

Packaging: 50 strips per box (each 2.75" × 16", perforated to create 100× 2.75" × 8" strips)
Grit Range: 60, 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
• Perforated center allows easy conversion from 16" to 8" strips
• Multi‑hole 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
• Excellent performance on soft and hard surfaces

SMSDistributors.com Expert Notes

Mirka Iridium 2.75" × 8" and 2.75" × 16" Strips are ideal for long‑board sanding, leveling filler, shaping surfaces, and refining contours. The ceramic/aluminum oxide blend provides a noticeably more aggressive initial cut compared to standard aluminum oxide strips, making Iridium perfect for bodywork, marine refinishing, woodworking, and composite fabrication.

The dust‑repellent precision coating keeps the abrasive cutting clean longer, especially on primers, paints, and composite materials. Combined with the multi‑hole pattern, Iridium strips offer excellent dust extraction performance for both manual and machine sanding.

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: 60, 80, 120, 150, 180, 240, 320, 400
• Coating: Semi‑open
• Strip Size: 2.75" × 16" (perforated to create 2.75" × 8" strips)
• Quantity: 50 × 2.75" × 16" strips (yields 100 × 2.75" × 8" strips)
• Hole Pattern: Multi‑hole

Grit Selection Guide

• 60–80 grit: Heavy stock removal, shaping, paint removal
• 120–150 grit: Leveling filler, intermediate sanding
• 180–240 grit: Surface prep, smoothing wood and composites
• 320–400 grit: Pre‑finish sanding, primer prep

Best For

• Automotive bodywork 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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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, Long‑Board Sanding