3M 7100140809 Aluminum Oxide Sandpaper 9x11 Medium Grit

Product Description

The 3M 7100140809 is a medium-grit aluminum oxide sandpaper sheet sized at 9 inches x 11 inches, suitable for a wide range of surface preparation and finishing tasks. Aluminum oxide is a synthetic abrasive mineral known for its toughness and durability, making it a reliable choice for demanding sanding applications across multiple substrate types. The sheet format is compatible with hand-sanding blocks and standard sheet sanders. This sandpaper is a staple consumable for contractors, finish carpenters, painters, and general tradespeople who require consistent, repeatable abrasive performance across a variety of job-site materials.

This sandpaper is suited for use on wood, paint, metal, plastic, drywall, and fiberglass. Its medium grit designation makes it appropriate for general material removal, scuff sanding between coats, surface leveling, and preparation work prior to priming or finishing. It is commonly used in both residential and light commercial settings where a versatile, multi-surface abrasive sheet is needed.

Key Features

• Medium-grit aluminum oxide abrasive for balanced cutting action and surface prep
• Full 9 x 11 inch sheet size fits standard hand blocks and sheet sanders
• Compatible with wood, paint, metal, plastic, drywall, and fiberglass surfaces
• Tough, durable construction for extended sheet life under repeated use
• Sold in packs with a minimum order quantity of 2

Compatibility

Designed as a general-purpose replacement abrasive sheet for use with standard 9 x 11 inch hand-sanding blocks and half-sheet finishing sanders across a wide range of surface types.

Installation Notes

Abrasive sheets require no special tools for installation into most sanding blocks or clamp-style sheet sanders. Ensure the work surface is clean and free of loose debris before sanding to maximize sheet life. Always wear appropriate personal protective equipment, including eye protection and a dust mask or respirator, particularly when sanding drywall, paint, or fiberglass. Dispose of used abrasive sheets in accordance with local regulations, especially when sanding lead-based paint or other hazardous materials.

Technical Specifications

• Abrasive Material: Aluminum Oxide
• Grit Level: Medium
• Sheet Size: 9 x 11 inches
• Weight: 0.31 pounds
• Unit of Measure: Pack
• Minimum Order Quantity: 2
• UPC: 00051144090020

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100140809