3M Company 20400-G-4 Sandpaper 400 Grit 9x11 Inches 4 Pack

Product Description

The 3M COMPANY 20400-G-4 is a 400-grit sandpaper sheet designed for fine surface finishing and light material removal. Each sheet measures 9 inches by 11 inches and features a no-slip grip backing that holds the sheet securely during hand or block sanding. The abrasive mineral construction is engineered for extended sheet life compared to standard sandpaper, making it a practical choice for finishing work in trade and professional applications. This 4-pack format suits technicians and tradespeople who need consistent fine-grit abrasive on hand for prep, finish sanding, and surface smoothing tasks.

This sandpaper is suited for finishing surfaces prior to painting, coating, or sealing in residential and light commercial settings. The 400-grit rating places it in the fine-abrasive range, appropriate for smoothing wood, metal, drywall compound, and painted surfaces between coats. Electricians, HVAC technicians, and general trade professionals commonly use fine-grit sheets for deburring metal edges, cleaning oxidized contacts, or preparing surfaces ahead of protective coatings.

Key Features

• 400-grit fine abrasive for finish sanding and light material removal
• Sheet size: 9 inches by 11 inches — standard hand-sanding format
• No-slip grip backing keeps the sheet stable during use
• Premium mineral abrasive technology for extended sheet life
• 4-pack format provides multiple sheets per unit

Compatibility

Designed as a standard 9 inch by 11 inch sandpaper sheet compatible with hand sanding blocks and manual sanding applications requiring a 400-grit fine abrasive.

Installation Notes

These sheets are intended for hand or block sanding use by trade professionals across multiple disciplines. When sanding near electrical components or in enclosed spaces, ensure the work area is properly ventilated and power is isolated before beginning surface prep. Use appropriate respiratory protection when sanding materials that may produce fine dust.

Technical Specifications

• Grit: 400
• Sheet Size: 9 inches x 11 inches
• Pack Quantity: 4 sheets
• Weight: 1.79 pounds
• Unit of Measure: EA
• Package Qty: 10

Standard Information

• Brand: 3M COMPANY
• Manufacturer Part Number: 20400-G-4