This trailer mounted fold over 3-stage light mast provides a safe and effective way for operators to quickly deploy lights, security cameras and other equipment to elevations up to thirty feet. This light tower folds over for easy transportation, features a rotating boom that allows for 360° of rotation, and a removable mast head for storing mounted equipment when not in use. The entire assembly is mounted onto a 10' single axle trailer, allowing operators to transport this fold over boom from location to location.
SKU: LM-20-3S-10TLR

Specifications / Additional Information

LM-20-3S-10TLR Trailer Mounted 3-Stage Light Tower Light Mast Specs
Tower Length: 9' to 20'
Mast Head Length: 44"
Capacity: 150 lbs
Materials: Steel
Finish: Powder Coated - Gloss Blue
Operation: (2) 1,000lbs Hand Winches, Electric Optional
Cable: 3/16" Galvanized Aircraft Cable

Quick Summary
9' to 20' Light Mast
Steel Construction
Power Coated Finish
Removable Mast Head
(4) 1,000lb Retractable Outriggers
125 mph Wind Resistance
Manual or Optional Electric Operation

Trailer Specs
Materials: Steel
Trailer Dimensions: 10'-L x 6'-W trailer bed
Hitch: 2" Ball Coupler
Wiring: 4-Pin Flat
Axle: 3,500lb
Suspension: 3,500 Lb 4-Leaf Double Eye Springs
Outriggers: (4) 1,000 Manual Crack Leveling Jacks - Retractable
Wheels: (2) 15" 5x4.5 Steel Rims
Tires: ST205/75/D15 H188
Weight: +-1200 lbs
Shipping: Common Freight
Shipping Dimensions: ~11'-L x 8'-W x 8'-H
Shipping Weight: +-1700 lbs
Options: Length- Mounting-Fixtures/ Call Us for Special Requirements

Special Orders- Requirements
Contact us for special requirements

Product Overview

This telescoping three stage steel light mast from Larson Electronics’ is designed to allow operators to quickly and safely deploy lighting, cameras, and other electrical equipment in locations where this equipment must be elevated to heights up to 20' for effective coverage. This light boom can be extended to 20' above the trailer floor for maximum area coverage, and collapsed to 9` for applications where a footprint smaller is required. The tower is constructed of square steel tubing with a lower section 7.13' in length and 4" by 4" by 1/8" thick, middle section 7.23' in length and 3" by 3" by 1/8" thick, and an upper section 7.78' in length and 2" by 2" by 1/8" thick. Each section has a minimum 1' foot of overlap. The mast is elevated using an included 1,000lb rated hand winch with 3/16" galvanized steel cable and extended to its full height using a second 1,000 lbs winch. The mast is mounted at the front of a 10' trailer and the mast head hangs above the back of the trailer.


44" Mast Head for mounting lights and equipment
13" by 15" by 1/4" thick mounting
44" Mast Head for mounting lights and equipment
13" by 15" by 1/4" thick mounting

A 44" wide and 2" by 2" by 1/4" thick mounting plate is attached to the upper section of the mast which provides a strong and stable platform for standard payloads up to 150 lbs. When elevated to its full upright position, the mast can be rotated a full 360°. By loosening the T-Handle, operators can rotate the mast with easy in either direction. The mast can be positioned in one of four different positions, and locked back in place by re-tightening the T-handle. The mast itself spins freely with easy, and can typically be rotated with a single hand.

The LM series of towers are powder coated with glossy blue finish for corrosion resistances and aesthetics. This light mast is mounted to a 14'by 6', single axle trailer via six 1/2" anchor bolts. The two wheel trailer is equipped with 3,5000 lbs leaf springs and 15" trailer tires. The trailer can support and haul an additional 2,000 lbs of equipment. A standard 2" ball coupling, two standard safety chains, and 4-pin flat trailer plug allow for easy hookup and towing.

The LM family of telescoping towers feature a proprietary mast guidance system, which provide increased stability during high winds. Four 1,000 lbs hand crank leveling jacks are used for leveling. The jacks can be leveled by hand crank or attachment provided for power drills. These outriggers can be extended 2` out from the side of the trailer for added stability. When lowered to 13.5`, the mast can withstand winds up to 125 mph. Custom builds can be provided for higher wind speed resistance when fully raised.

The LM-20-3S-10TLR fitted with four HID-22-SL-REM 1000 Watt Metal Halide Light Fixtures
The LM-20-3S-10TLR fitted with four EPL-HB-150LED-RT 150 Watt Explosion Proof LED Light Fixtures
Manual 1,000 lb hand crank winch for elevating and folding over the light mast on the LM-20-3S-10TLR. | Mast support bracket for securing the mast boom in the fold-over position during transportation.
Retractable outriggers with 1,000 lb manual crank jacks and tail lights.
Mast support bracket for securing the mast boom in the fold-over position during transportation.
Ready to Ship

This light tower assembly weighs approximately 1200 lbs, can easily support and lift 150 lbs fixtures. The entire tower assembly is shipped via common freight carrier or flatbed. Larson Electronics can custom tailor these units to the customer’s requirements with longer sections and larger mounting plates. For example, the LM-40-4S is another model that reaches to a length of 40`, with base section 11.25` in length, lower section 11.25` in length, an upper section 11.25` in length, and a top section 11.75` in length. Larson Electronics can custom build these towers to meet your overall and collapsed height requirements.

We also offer a choice of either the manual or electric winches, finishing, and equipped light heads. Winch options include 1,000 lbs hand winches (included standard) or optional electric winches for standard light towers, and heavy duty winches and hoists for high payload units. Powder coating color can be customized (the standard mast is gloss blue). Mast location on the trailer bed can be tongue mounted, front of the trailer bed, or center of the trailer bed. These towers can be fitted with Larson Electronics line of high output light heads, or customize the mast head to meet the mounting requirements for your equipment.

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