Arlington 449 Insulated Bushing with 105° Temperature Rating, 4", Plastic

Keep cables secure and protected where they pass through metal knockouts with the Arlington Industries 449 insulated bushing. This plastic insulating knockout bushing is designed to shield cable jackets from sharp edges, reduce wear and prevent accidental grounding—critical for security, surveillance and monitoring systems as well as general networking and low-voltage cabling. The Arlington 449 fits 4" openings and carries a 105° temperature rating, delivering reliable performance in warm equipment rooms and near heat-generating components. Made from durable, corrosion-resistant plastic and sold in convenient packs of 10, these bushings streamline installations and help maintain clean, code-conscious terminations in junction boxes and enclosures. Installers will appreciate the snap-in style for fast, tool-free mounting and the professional appearance it provides. Ideal for CCTV camera runs, access control, structured cabling and other low-voltage projects, the Arlington 449 insulated bushing supports long-term system reliability. Order today to protect your cabling and simplify your next security or networking installation.

• Protects and insulates cables routed through 4" knockouts, reducing abrasion and preventing electrical shorts
• 105° temperature rating ensures reliable performance in warm environments and long-term installations
• Lightweight, corrosion-resistant plastic provides durable protection for security, surveillance, and networking cabling
• Snap-in design for quick, tool-free installation and a clean, professional finish on junction boxes and panels
• Pack of 10 keeps projects on schedule and reduces repeat ordering for large deployments