3M MMM859 Double-sided Foam Mounting Squares 35 Pack

Product Description

The 3M MMM859 is a pack of 35 clear double-sided foam mounting squares designed for secure, removable adhesion across a wide range of surfaces. Each square measures 0.68 inches by 0.68 inches and is constructed from foam material that creates a strong bond while allowing clean removal without surface damage. The clear profile keeps the mount discreet, making it well suited for display and signage applications where aesthetics matter. The pack weighs approximately 0.043 pounds and is sold as a single pack of 35 squares, making it practical for moderate-volume mounting tasks in office, school, or light commercial settings.

These mounting squares are used for hanging posters, artwork, banners, signs, and similar lightweight displays. Compatible surfaces include painted cinder blocks, varnished wood, blackboards, and glass. They are commonly used in classrooms, offices, retail display areas, and anywhere a clean, non-permanent mount is preferred over hardware or permanent adhesive. The removable foam construction makes repositioning straightforward without leaving residue or marring finished surfaces.

Key Features

• Clear foam construction keeps the mount visually discreet on any surface
• Double-sided adhesion bonds to both the display material and the mounting surface simultaneously
• Removable design allows clean takedown without surface damage or residue
• Each square measures 0.68 inches by 0.68 inches for consistent coverage
• Pack of 35 squares provides enough quantity for multiple posters or a single large display installation
• Works on a variety of surfaces including glass, wood, painted masonry, and blackboards

Compatibility

Designed for use on painted cinder blocks, varnished wood, blackboards, and glass surfaces. Suitable for mounting lightweight posters, signs, banners, and artwork in office and school supply applications.

Installation Notes

Clean and dry the mounting surface thoroughly before application to ensure maximum adhesion. Peel the liner from one side, press firmly onto the back of the item to be mounted, then remove the second liner and press the item onto the wall or surface with firm, even pressure. Allow the adhesive to set for a short period before loading the mount. When removing, pull the square slowly at a low angle to minimize surface stress and reduce the chance of finish damage.