3M Company 414H-LONG-DC Extreme Mounting Tape 1x33.3 Ft

Product Description

The 3M COMPANY 414H-LONG-DC is a double-sided extreme mounting tape designed for heavy-duty fastening applications across a wide range of surfaces. This all-weather tape measures 1 inch wide by 33.3 feet long and is engineered to hold up to 30 pounds. Its highly conformable construction allows it to bond securely to irregular or textured surfaces without gaps or air pockets. Licensed trade professionals and facilities maintenance crews rely on this tape for permanent mounting solutions where mechanical fasteners are impractical. The tape performs in outdoor and indoor environments, resisting moisture and temperature variation typical of field conditions.

This double-sided mounting tape is suited for residential and light commercial applications where surface bonding is required without visible hardware. It adheres to wood, metal, and concrete, making it appropriate for signage mounting, panel attachment, trim installation, and general surface bonding tasks. The tape ships in a package quantity of three rolls, supporting multi-job or multi-technician use. Its all-weather formulation makes it a practical choice for exterior installations or environments with humidity fluctuations.

Key Features

• Holds up to 30 pounds per the manufacturer rating
• Double-sided construction for surface-to-surface bonding without visible fasteners
• Highly conformable tape body bonds to irregular, textured, and porous surfaces
• All-weather formulation suitable for outdoor and moisture-prone environments
• Bonds to wood, metal, and concrete substrates
• 1 inch wide by 33.3 feet long per roll; package includes 3 rolls

Compatibility

Designed as a general-purpose double-sided mounting tape for use on wood, metal, and concrete surfaces in residential and light commercial fastening applications.

Installation Notes

Surface preparation is critical for maximum adhesion — clean and dry the bonding surface before application and remove any dust, oil, or loose material. Apply firm, even pressure across the full length of the tape after placement to ensure full contact with the substrate. This tape is intended for permanent mounting; removal may damage the bonded surface. Follow all applicable building codes and manufacturer guidelines when using adhesive mounting systems in structural or load-bearing contexts.

Technical Specifications

• Width: 1 inch
• Length: 33.3 feet
• Hold Strength: Up to 30 pounds
• Tape Type: Double Sided
• Weather Resistance: All Weather
• Compatible Surfaces: Wood, Metal, Concrete
• Package Quantity: 3 rolls
• Unit of Measure: EA
• Weight: 1.5 pounds

Standard Information

• Brand: 3M COMPANY
• Manufacturer Part Number: 414H-LONG-DC