Bosch GLL300-42GL 360° Green-Beam Three-Plane Laser Level
The Bosch GLL300-42GL is a compact three-plane 360° green laser with a rechargeable 3.7V battery, AA backup power, USB-C charging, IP65 protection, 100 ft visible range and receiver compatibility up to 260 ft.
Key Product Details
- Application
- Cabinetry, Floor Layout, General Construction, Tile Installation, Wall Alignment
- Laser Type
- 3-Plane 360°
- Beam Color
- Green
- Power Source
- AA Batteries, Rechargeable Li-ion
- Detector Compatible
- Yes
- Connectivity
- None
- IP Rating
- IP65
Bosch GLL300-42GL Overview
The Bosch GLL300-42GL combines three 360° green laser planes with a smaller rechargeable power system than Bosch’s 18V professional model. It is designed as an all-round leveling and alignment tool for users who want full-room coverage without carrying a larger 18V laser.
Full-Room 360° Coverage
One horizontal and two vertical 360° planes make it possible to establish level, plumb and square references around an entire room. This is useful for flooring layout, tile installation, wall alignment, cabinetry and other interior installation work.
100 ft Visible Range
Bosch specifies a working range of 100 ft without a receiver and up to 260 ft with a compatible receiver. Accuracy is rated at 1/8 in. at 30 ft, which is appropriate for most professional interior layout tasks.
Rechargeable and Backup Power
The included 3.7V 3.0 Ah lithium-ion battery can be charged over USB-C, including while the laser is being used. An alkaline battery adapter provides AA backup power, reducing downtime when charging is inconvenient.
IP65 Construction
The housing is IP65 rated for dust-tight and water-resistant protection and uses rubber overmolding around key impact areas. The laser also includes Bosch’s Smart Pendulum System, which self-levels, indicates out-of-level conditions and locks for transport.
Best Use Case
The GLL300-42GL is a strong middle ground for installers who want three 360° planes and professional durability but do not need Bluetooth or the 400 ft receiver range of the larger GLL330-80CGL.
Pros & Cons
Pros
- Three 360° green laser planes
- 100 ft visible range
- Up to 260 ft with receiver
- 1/8 in. accuracy at 30 ft
- Rechargeable 3.7V battery
- USB-C charging while in use
- AA battery backup option
- IP65 protection
- 1/4-20 and 5/8-11 tripod threads
Cons
- No Bluetooth control
- Shorter receiver range than Bosch GLL330-80CGL
- Receiver sold separately
Technical Specifications
| Laser Type | 3-plane 360° self-leveling |
|---|---|
| Laser Color | Green |
| Visible Range | 100 ft |
| Range with Receiver | 260 ft |
| Accuracy | ±1/8 in. at 30 ft |
| Self-Leveling Range | Up to ±4° |
| IP Rating | IP65 |
| Power Source | 3.7V 3.0 Ah Li-ion or AA batteries |
| Charging | USB-C |
| Mount Thread | 1/4-20 and 5/8-11 |
| Laser Class | Class 2 |
| Weight | 5.3 lb |
Who Is This Product For?
Flooring and interior installers who want full-room three-plane coverage with rechargeable power and strong jobsite protection.
Users who specifically need Bluetooth control or very long receiver range above 260 ft.
Editorial Verdict
A well-balanced professional 3-plane laser with 360° coverage, USB-C rechargeable power, AA backup and IP65 durability in a more compact format.
