48"-80" Extendable Box Beam Level
Built for durability and accuracy, the extendable box beam level adapts to fit jobs where standard lengths can’t. The telescopic extension customizes the level’s reach, while integrated rulers on both the frame and extension clearly show the total extended length—ideal for measuring and taking inside dimensions. A manual lock-out secures the extension at any desired length for repeatability. The magnified center vial ensures best-in-class visibility, and all vials are triple secured using our patented mounting system for unmatched durability and reliability. For accuracy, both gauging edges are precision-milled on the same plane, maintaining uniform contact across the full extended length.
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Telescopic extension adjusts level length eliminating the need to carry multiple levels and adapting to fit custom applications
Manual lock-out holds the extension at desired length
Integrated rulers display the level's total length with extension
Both gauging edges are precision-milled on the same plane for uniform contact along the material’s full length when extended
Patented, triple-secured vial mounting system provides ultimate durability and guarantees lifetime accuracy
Hi-visibility impact-resistant plumb vial and magnified center vial
| Accuracy: | Extended: .001"; Retracted: .0005" Extended: 1mm/m; Retracted: 0.5mm/m Extended: 0.057°; Retracted: 0.029° |
|---|---|
| Warranty: | Lifetime Accuracy Warranty |
Builders rely on the extendable box beam level for precise installation of windows, doors, and cabinets, while plumbers value its adjustable design for accurately leveling shower pans and bathtubs of varying sizes.
Johnson Level Rapid Response Center for Repair and Service
Contact customer service at service@johnsonlevel.com or call 888-953-8357 from M-F 7am-5pm CT.
Product Details
Built for durability and accuracy, the extendable box beam level adapts to fit jobs where standard lengths can’t. The telescopic extension customizes the level’s reach, while integrated rulers on both the frame and extension clearly show the total extended length—ideal for measuring and taking inside dimensions. A manual lock-out secures the extension at any desired length for repeatability. The magnified center vial ensures best-in-class visibility, and all vials are triple secured using our patented mounting system for unmatched durability and reliability. For accuracy, both gauging edges are precision-milled on the same plane, maintaining uniform contact across the full extended length.
Specifications
| Accuracy: | Extended: .001"; Retracted: .0005" Extended: 1mm/m; Retracted: 0.5mm/m Extended: 0.057°; Retracted: 0.029° |
|---|---|
| Warranty: | Lifetime Accuracy Warranty |
Application
Builders rely on the extendable box beam level for precise installation of windows, doors, and cabinets, while plumbers value its adjustable design for accurately leveling shower pans and bathtubs of varying sizes.
Support
Johnson Level Rapid Response Center for Repair and Service
Contact customer service at service@johnsonlevel.com or call 888-953-8357 from M-F 7am-5pm CT.
