3M 7000000318 Wetordry Abrasive Sheet 400 Grit 9x11 in

Product Description

The 3M 7000000318 is a Wetordry Tri-M-ite abrasive sheet designed for wet or dry sanding applications in trade and industrial finishing work. Sold as a case of 5 cartons with 50 sheets per carton (250 sheets total), each sheet measures 9 inches x 11 inches and carries a 400A grit rating, making it suited for fine finish sanding, surface preparation, and between-coat smoothing. The silicon carbide construction of the Tri-M-ite line delivers consistent cut and finish on metal, primer, filler, and painted surfaces. Tradespeople and finishing technicians rely on this grit level when transitioning from material removal to final surface prep before topcoats.

This abrasive sheet is used in automotive refinishing, bodywork, metal fabrication, and general surface prep where a fine grit is needed to remove scratches from coarser grits or prepare a surface for paint adhesion. The 9 inches x 11 inches sheet size fits standard hand sanding blocks and can be cut to fit sanding tools. Both wet and dry sanding methods are supported, giving technicians flexibility depending on the substrate and finish requirements.

Key Features

• 400A grit rating for fine finish sanding and surface prep
• Wetordry construction supports both wet and dry sanding techniques
• Sheet size of 9 inches x 11 inches fits standard sanding blocks and can be cut to size
• 50 sheets per carton, 5 cartons per case for high-volume job site use
• Tri-M-ite silicon carbide abrasive construction for consistent cut on metal, primer, and painted surfaces

Compatibility

Designed for use as a general-purpose abrasive sheet compatible with hand sanding blocks and flat sanding applications requiring a 9 inches x 11 inches sheet format in 400 grit.

Installation Notes

No power tools or mechanical fasteners are required for hand-sheet sanding applications. When sanding wet, ensure the work area and substrate are appropriate for water exposure and that runoff is managed per local environmental guidelines. Wear appropriate PPE including a dust mask or respirator and eye protection when dry sanding. Store unused sheets flat in a cool, dry location to prevent curl or moisture absorption.

Technical Specifications

• Grit: 400A
• Sheet Dimensions: 9 inches x 11 inches
• Sheets per Carton: 50
• Cartons per Case: 5
• Unit of Measure: Case
• Case Weight: 12.8 pounds
• UPC: 00051144020027

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000318