Arlington 4400 1/2 in. All-Plastic Snap-In Knockout Bushing, Black

The Arlington 4400 Snap-In Knockout Bushing provides a quick and economical solution for protecting electrical conductors as they pass through 1/2-inch knockouts in metal enclosures. Manufactured from durable non-metallic plastic, this snap-in bushing installs easily without tools and helps prevent abrasion and damage to wire insulation. Its corrosion-resistant construction makes it ideal for electrical panels, junction boxes, switchgear, cabinets, and other electrical enclosures requiring reliable cable protection. :contentReference[oaicite:0]{index=0}

Key Features

• Snap-In Installation – Easily installs into standard 1/2-inch knockouts without additional hardware.
• All-Plastic Construction – Non-metallic design resists corrosion and will not rust.
• Protects Wire Insulation – Provides a smooth edge that helps prevent abrasion when wires pass through metal knockouts.
• 1/2-Inch Trade Size – Designed specifically for standard 1/2-inch knockout openings.
• Durable Black Finish – Professional appearance suitable for electrical installations.
• Lightweight Design – Compact construction adds virtually no weight to the enclosure.
• Quick Tool-Free Installation – Snaps securely into place for fast installation.
• Suitable for Electrical Enclosures – Ideal for panelboards, junction boxes, cabinets, and switchgear.
• UL and CSA Listed – Meets recognized safety requirements for electrical applications.
• Made in the USA – Manufactured by Arlington Industries. :contentReference[oaicite:1]{index=1}

Your Benefits:

• Protects conductors from sharp knockout edges
• Installs quickly without special tools
• Corrosion-resistant plastic construction
• Helps extend wire insulation life
• Ideal for new installations and repairs
• Reliable fit for standard 1/2-inch knockouts

Arlington Snap-In Bushing Series

The Arlington 4400 Snap-In Knockout Bushing offers electricians a dependable, economical solution for safeguarding conductors from abrasion at knockout openings. Its durable plastic construction, quick snap-in installation, and compatibility with standard 1/2-inch knockouts make it an essential accessory for residential, commercial, and industrial electrical installations. :contentReference[oaicite:2]{index=2}

Ideal Applications

Technical Highlights