The G-11 Vapour Barrier is designed for use with 1-gang 2" x 3" single device boxes up to 3" deep. It helps create a protective seal around electrical box openings where air leakage and moisture transfer need to be reduced.

Made from clear flexible plastic material, this vapour barrier is a practical accessory for switch, receptacle, and single-device box installations. It is commonly used in insulated walls, renovation projects, new construction, and other applications where vapour protection is required around electrical openings.

This product is suitable for electricians, contractors, builders, and renovation teams working on residential or light commercial projects.

Always confirm box compatibility, installation requirements, and local building or electrical code before installation.

Key features

• G-11 vapour barrier
• Designed for 1-gang single device boxes
• Fits 2" x 3" device boxes up to 3" deep
• Clear flexible plastic construction
• Helps reduce air leakage around electrical box openings
• Helps protect against moisture transfer
• Suitable for switches, receptacles, and device box installations
• Useful for renovations, new construction, and contractor projects

Best used for

• 1-gang device box installations
• Switch box openings
• Receptacle box openings
• Insulated wall applications
• Vapour barrier protection
• Renovation projects
• New construction
• Contractor electrical installations