Johnson Level Tool 7748-O 48 in Plastic I-beam Level

Product Description

The JOHNSON LEVEL TOOL 7748-O is a 48-inch I-beam level built with a Structo-Cast injection-molded structural-foam plastic frame. Designed for carpenters, finish tradespeople, and general contractors, this level handles jobsite use without scratching fine wood or painted surfaces. The plastic frame is nonconductive and buoyant, adding a layer of safety in environments where contact with electrical sources or water is possible. Durable acrylic vials deliver impact resistance, and the Quik Change replaceable vial covers make field maintenance straightforward without returning the tool to a shop.

This level is suited for residential and light commercial applications including framing, cabinetry, trim work, tile setting, and general layout tasks. At 48 inches, it covers standard stud bays and door openings in a single pass. The nonconductive frame makes it appropriate for use near low-voltage or panel work where a metal level would present a hazard. Finish carpenters and general tradespeople working on surfaces that must stay unmarked will find the plastic frame construction practical for daily use.

Key Features

• Structo-Cast injection-molded structural-foam plastic frame resists jobsite impacts
• Nonconductive construction suitable for use near electrical components
• Frame will not scratch fine wood, trim, or painted surfaces
• Buoyant design — frame floats if dropped in water
• Impact-resistant acrylic vials for accurate, long-lasting readings
• Quik Change replaceable vial covers allow field servicing without special tools

Compatibility

Designed as a general-purpose 48-inch I-beam level for residential and light commercial trade applications where a nonconductive, surface-safe frame is required.

Installation Notes

No installation is required for this hand tool. Store the level horizontally or hang it vertically by the hang hole when not in use to preserve vial accuracy over time. Avoid prolonged exposure to direct sunlight or extreme heat, which can affect vial fluid and frame integrity. Vial covers can be swapped in the field using the Quik Change system without disassembling the frame.

Technical Specifications

• Length: 48 inches
• Frame Material: Structo-Cast injection-molded structural-foam plastic
• Vial Material: Acrylic
• Weight: 1.665 pounds
• UPC: 00049448774524

Standard Information

• Brand: JOHNSON LEVEL TOOL
• Manufacturer Part Number: 7748-O