3M 3630 Scotchcal Translucent Graphic Film – Silver Metallic 121 is a premium 2 mil cast vinyl designed for internally illuminated signage, awnings, and decorative glass applications. This translucent film delivers a sleek silver tone with a subtle metallic appearance during the day and smooth, even illumination when backlit, making it ideal for modern, high-end sign graphics.

Engineered with a clear, pressure-sensitive adhesive, this film adheres to a wide range of substrates including acrylic, polycarbonate, and glass. It is commonly used by sign professionals for lightboxes, channel letters, and architectural signage where refined color, uniform light diffusion, and long-term durability are required.

Key Features & Benefits
• Translucent cast vinyl for illuminated signage
• Silver metallic tone for sleek, premium visual appeal
• 2 mil (50 micron) premium cast film construction
• Clear solvent acrylic adhesive for strong bonding
• Thermoformable for channel letters and curved surfaces
• Compatible with LED and fluorescent lighting
• Lay-flat liner resists moisture for easier installation
• Backed by 3M MCS Warranty (up to 9 years outdoor durability)

Technical Specifications
Series: 3M 3630
Color: Silver Metallic 121
Film Type: Cast Vinyl
Thickness: 2 mil (50 micron)
Finish: Matte / Metallic Appearance
Adhesive: Clear Solvent Acrylic (Permanent)
Application Method: Wet
Application Surface: Flat / Slightly Curved
Interior/Exterior: Interior and Exterior
Minimum Application Temp: 60.8°F (16°C)
Opacity: Translucent
Liner: Synthetic Lay-Flat, Moisture Resistant
Compatibility: LED and Fluorescent Lighting
Warranty: 3M MCS Warranty Eligible

Common Applications
• Internally illuminated sign faces
• Channel letters and lightboxes
• Architectural and premium signage
• Decorative and architectural glass
• Retail and branded environments

Additional Structured Data
Product Type: Translucent Sign Vinyl
Material: Cast Vinyl
Mounting Style: Adhesive Film
Use Case: Illuminated signage and graphics
Industry: Signage and Graphics

Customer Intent
This product is ideal for sign shops, installers, and designers looking for a premium translucent film with a metallic silver appearance. It is commonly used when sleek design, even light diffusion, and long-term outdoor durability are required.

Enhance your illuminated signage with 3M 3630 Scotchcal Translucent Graphic Film Silver Metallic 121, engineered for premium appearance, durability, and professional results.