A studio shot of the Bosch GLL40-20G self-leveling cross-line laser tool projecting bright green vertical and horizontal laser lines, demonstrating professional-grade green beam technology for high visibility.
An infographic highlighting the technical features of the Bosch GLL40-20G green laser, including 2X brighter green beams, VisiMax technology for diode reliability, an integrated switch to lock the pendulum, and a compact, lightweight housing with 1/4-20 tripod thread compatibility.
A product kit shot showing the Bosch GLL40-20G green beam laser level alongside its included accessories: a blue heavy-duty protective pouch, two AA batteries, and the MM 2 flexible mounting device.
A perspective studio view of the Bosch professional GLL40-20G green laser level showing the primary aperture windows used to project high-visibility 40-foot green laser lines for layout and alignment.
A profile shot of the Bosch GLL40-20G laser level highlighting the large red sliding integrated power switch and professional branding on the durable blue and black jobsite-ready housing.
A studio shot of the Bosch GLL40-20G green laser mounted on the MM 2 flexible mounting device, showcasing the tool's ability to be clamped and adjusted via a rotating 360-degree neck.
An instructional diagram illustrating the Bosch GLL40-20G laser mounted on a tripod in a room setting, projecting precisely level and plumb green cross-lines for wall layout and framing applications.
An action shot of a professional installer using the Bosch GLL40-20G green beam laser to perfectly align and mark vertical and horizontal positions for hanging wooden floating shelves on a residential wall.
A contractor utilizing the Bosch green beam laser level on a tripod to establish a level horizontal guide across a large wall for the precise installation of white square tiles in a commercial setting.
A professional installer on a construction site using the Bosch green laser mounted on a tripod to align white square wall tiles, demonstrating the visibility of the cross-lines against mortar and tiled surfaces.
A professional using the Bosch GLL40-20G green cross-line laser to verify the level and alignment of white cabinetry during a kitchen installation, with the tool mounted on a tripod for stability.
An action shot of the Bosch green laser mounted on a tripod at a steep angle, projecting a diagonal line for a professional installer to align a handrail along a concrete staircase.
The official Bosch limited warranty graphic for measuring and layout tools, detailing a 1-year tool warranty with an additional year of coverage available upon product registration.
Bosch GST18V-37: 18V Brushless Top-Handle Jig Saw promotional video
A studio shot of the Bosch GLL40-20G self-leveling cross-line laser tool projecting bright green vertical and horizontal laser lines, demonstrating professional-grade green beam technology for high visibility.
An infographic highlighting the technical features of the Bosch GLL40-20G green laser, including 2X brighter green beams, VisiMax technology for diode reliability, an integrated switch to lock the pendulum, and a compact, lightweight housing with 1/4-20 tripod thread compatibility.
A product kit shot showing the Bosch GLL40-20G green beam laser level alongside its included accessories: a blue heavy-duty protective pouch, two AA batteries, and the MM 2 flexible mounting device.
A perspective studio view of the Bosch professional GLL40-20G green laser level showing the primary aperture windows used to project high-visibility 40-foot green laser lines for layout and alignment.
A profile shot of the Bosch GLL40-20G laser level highlighting the large red sliding integrated power switch and professional branding on the durable blue and black jobsite-ready housing.
A studio shot of the Bosch GLL40-20G green laser mounted on the MM 2 flexible mounting device, showcasing the tool's ability to be clamped and adjusted via a rotating 360-degree neck.
An instructional diagram illustrating the Bosch GLL40-20G laser mounted on a tripod in a room setting, projecting precisely level and plumb green cross-lines for wall layout and framing applications.
An action shot of a professional installer using the Bosch GLL40-20G green beam laser to perfectly align and mark vertical and horizontal positions for hanging wooden floating shelves on a residential wall.
A contractor utilizing the Bosch green beam laser level on a tripod to establish a level horizontal guide across a large wall for the precise installation of white square tiles in a commercial setting.
A professional installer on a construction site using the Bosch green laser mounted on a tripod to align white square wall tiles, demonstrating the visibility of the cross-lines against mortar and tiled surfaces.
A professional using the Bosch GLL40-20G green cross-line laser to verify the level and alignment of white cabinetry during a kitchen installation, with the tool mounted on a tripod for stability.
An action shot of the Bosch green laser mounted on a tripod at a steep angle, projecting a diagonal line for a professional installer to align a handrail along a concrete staircase.
The official Bosch limited warranty graphic for measuring and layout tools, detailing a 1-year tool warranty with an additional year of coverage available upon product registration.
Bosch GST18V-37: 18V Brushless Top-Handle Jig Saw promotional video
BOSCH

Bosch GLL40-20G 40 Ft Green Beam Self Leveling Cross Line Laser Level with VisiMax Technology 2X Brighter Visibility MM2 Flexible Mount and Pouch

Only 2 left
SKU: GLL40-20G
$127.00

Description

Bosch Promtional Logo Logout

Brilliant Green Visibility: Professional Precision for Any Leveling Job

Experience superior jobsite clarity with the Bosch GLL40-20G Green-Beam Self-Leveling Cross-Line Laser. Engineered for professionals who need high visibility in a compact package, this tool projects vibrant green laser lines that are up to 2X brighter than standard red beams. Featuring Bosch-exclusive VisiMax™ technology, the GLL40-20G constantly monitors internal temperature and power consumption to deliver the brightest possible line while optimizing energy efficiency for long-term reliability. Whether you are hanging cabinetry, aligning tile, or framing a room, this 40-ft range laser ensures your layout is dead-on accurate.

Setup is effortless thanks to the integrated Smart Pendulum System, which automatically self-levels and alerts you to out-of-level conditions. For specialized applications or safe transport, the system locks the pendulum when switched off to protect the internal components. This kit includes the MM 2 Flexible Mounting Device, featuring a rotating 360° neck that allows you to clamp the laser onto virtually any surface from 1/2 inch to 2-1/4 inches thick. Lightweight and ergonomically designed, the GLL40-20G is the ultimate portable solution for fast, accurate horizontal and vertical alignment.

Key Features

  • Ultra-Bright Green Beams: Projects lines up to 2X brighter than red lasers for maximum visibility within a 40-ft working range.
  • VisiMax™ Technology: Maximizes beam brightness and tool life by monitoring temperature and power consumption.
  • Cross-Line Mode: Projects precisely level horizontal and plumb vertical lines for a wide array of layout applications.
  • Smart Pendulum System: Enables automatic self-leveling and indicates out-of-level conditions for guaranteed accuracy.
  • MM 2 Flexible Mount: Includes a versatile clamp with a 360° rotating neck for quick setup on pipes, studs, or tables.
  • Secure Transport Lock: Pendulum locks when powered down to protect the mechanism from damage during travel.
  • Compact & Ergonomic: Small enough to fit in a pocket and easy to store in the included heavy-duty pouch.

What's Included

  • (1) -20G Green-Beam Self-Leveling Cross-Line Laser
  • (1) MM 2 Flexible Mounting Device
  • (1) Heavy-Duty Carrying Pouch
  • (2) AA Batteries

 

Specifications

Range Up to 40 Feet
Accuracy (at 30-ft) ± 5/16 Inch
Laser Color Green
Leveling Type Self-Leveling (Up to 4°)
Mount Threading 1/4-20
IP Rating IP 40
Laser Diode Class 2, 500-540 nm
Weight 0.5 lbs.
Dimensions (LxWxH) 3.2" x 2.3" x 3.2"
Operating Temp 41° F to 104° F
Material Plastic Composite

Pro-Tip: To get the most out of the MM 2 mount, clamp it to a standard ladder step or a door frame. This allows you to position the laser at eye level for hanging décor or cabinetry without needing a full-sized tripod, keeping your workspace clear and efficient!