Appleton 143G 1 Inch Malleable Iron Clampback

Product Description

The APPLETON 143G is a 1-inch malleable iron clampback fitting used to secure conduit or cable runs along walls, ceilings, and structural surfaces. It provides a rigid standoff mount that holds conduit at a fixed distance from the mounting surface, reducing vibration contact and allowing for proper wire pulling clearance. Electricians install this fitting during rough-in and finish work on both commercial and industrial conduit systems. At 0.11 pounds and a low-profile 0.16-inch height, it suits tight installations where minimal projection off the surface is required.

The 143G clampback is suited for 1-inch conduit installations in commercial buildings, industrial facilities, and utility spaces. It is commonly used alongside straps and hangers to complete a secure, code-compliant conduit support system. The fitting is appropriate for surface-mounted rigid conduit runs on concrete block, steel framing, or wood backing where a standoff mount is preferred over a flush strap.

Key Features

• 1-inch trade size fits standard 1-inch conduit outside diameter
• Malleable iron construction provides durability in industrial and commercial environments
• Low-profile 0.16-inch standoff height suits tight surface-mount applications
• Lightweight at 0.11 pounds for easy one-hand positioning during installation
• Compact footprint of 5.4 inches by 5.3 inches for efficient packaging and jobsite handling

Compatibility

Designed as an OEM-style conduit support fitting for use with 1-inch rigid metal conduit, intermediate metal conduit, or equivalent trade-size conduit systems in commercial and industrial electrical installations.

Installation Notes

Clampback fittings are installed by licensed electricians following applicable NEC requirements for conduit support spacing and securing intervals. De-energize all circuits in the work area before beginning conduit support installation. Use appropriate fasteners rated for the mounting surface, whether concrete anchor, wood screw, or sheet-metal screw. Do not overtighten hardware on malleable iron fittings, as excessive force can crack the casting.

Technical Specifications

• Trade Size: 1 inch
• Material: Malleable iron
• Package Dimensions (L x W x H): 5.4 inches x 5.3 inches x 0.16 inches
• Weight: 0.11 pounds
• UPC: 78312676120

Standard Information

• Brand: APPLETON
• Manufacturer Part Number: 143G