Gator 4239 Waterproof Sandpaper 400 Grit 9x11 in 25 Pack

Product Description

The GATOR 4239 is a waterproof silicon carbide sandpaper sheet designed for wet sanding applications between coats of paint, sealer, varnish, and other finish materials. Each sheet measures 9 inches x 11 inches and carries a 400 grit rating, placing it in the super fine range for finish work. The resin bond coating resists moisture and holds abrasive grain longer than standard glue bond sheets, which translates to more usable life per sheet. Sheets are sold in boxes of 25, making this a practical choice for contractors and finishing tradespeople who go through abrasives at volume.

This product is suited for surface preparation work in residential and light commercial finishing applications. The 400 grit designation makes it appropriate for smoothing between finish coats, knocking down nibs in cured varnish or lacquer, and preparing surfaces for a final topcoat. Wet sanding with these sheets helps minimize scratch marks and keeps the work surface cool during sanding. Painters, woodworkers, auto body finishers, and general contractors handling finish carpentry will find this grit level a standard part of a multi-step finishing sequence.

Key Features

• 400 grit super fine rating suited for between-coat sanding and final finish preparation
• Waterproof construction supports wet sanding techniques to reduce surface heat and scratch visibility
• Resin bond coating outlasts standard glue bond sandpaper for extended sheet life
• Sheet size of 9 inches x 11 inches fits standard hand sanding blocks and can be cut to size
• 25 sheets per box for consistent supply on multi-coat finishing projects

Compatibility

Designed for wet or dry hand sanding use on painted surfaces, sealed wood, varnished trim, and similar finish coatings where a 400 grit super fine abrasive is appropriate between coats.

Installation Notes

Wet sanding should be performed with the appropriate personal protective equipment, including eye protection, particularly when working overhead or in confined spaces. When using these sheets wet, ensure that any nearby electrical components or outlets are protected from water contact. Sheets can be folded or cut to fit sanding blocks for better control and even pressure distribution. Dispose of used abrasive sheets in accordance with local waste guidelines, especially when sanding lead-based or specialty coatings.

Technical Specifications

• Grit: 400 Super Fine
• Sheet Size: 9 inches x 11 inches
• Sheets Per Box: 25
• Backing Type: Waterproof
• Bond Type: Resin Coat
• Package Weight: 0.759 pounds
• UPC: 00082354042394

Standard Information

• Brand: GATOR
• Manufacturer Part Number: 4239