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The MRL Mini MacPro 400 features a rugged welded tubular steel frame and a 4-wheel, self-propelled chassis equipped with a dual-wheel rear pivot steering system for precise maneuverability. Its hydrostatic, single-pedal drive delivers smooth forward travel from 0–7.5 mph (0–12 km/h) and seamless reverse operation. The fully enclosed electronic hydraulic brake system includes a manual hydraulic bypass for added safety and control.

A 400 lb (182 kg) oil-jacketed, non-pressurized thermoplastic tank integrates a high-performance material pump with electronically controlled pump RPM and a digital RPM gauge. The thermostatically controlled LPG heat-transfer-oil system provides reliable temperature management through an oil circulation pump and digital controls.

Adjustable application slides accommodate widths from 4" to 13" (10–33 cm). The ribbon-extrusion gun is equipped with an air-lift mechanism and transport-locking pin. A single-drop glass bead system includes a 100 lb (45 kg) bead hopper and three bead guns, each with adjustable air injection. 

An 8 cfm, 110 psi air compressor supports the bead system, air unloader, moisture separator, operational solenoids, ribbon gun lift, and thermoplastic “blow-down” function. The electrical control console includes electronic burner controls, gun on/off switches, gun test switches, pilot light, and a remote E-Stop engine shutdown feature.

The operator benefits from an adjustable alignment pointer with air-actuated lift, with an optional laser pointer upgrade. The comprehensive safety lighting package includes three LED night-work lights—illuminating the tank fill port, forward work area, and gun carriage—along with two Whelen LED amber strobes positioned at the rear and on the elevated mast.
A secure travel latch is built into the front of the machine, with an optional steel trailer-bed latch available. Standard finish is Lime Squeeze Green with a silver material tank; optional colors are available for an additional charge. The unit is backed by a one-year warranty on all MRL-fabricated parts.

The integrated skip timing system features a color display, programmable skip cycles, footage counters, bead lead/lag adjustments, and storage for up to three profiles.
  • Self-contained "Hi-torque" hydraulic agitator drive motor(s) with directional control valve(s).
  • "Auger" enhanced steel agitator shaft assembly.
  • Steel abrasion resistant agitators shaft assembly with replaceable hardened “stub” shafts and replaceable hardened bushings.
  • High-temperature ceramic insulation installed on combustion chamber floor
  • Thermostatically controlled, automatic electronic ignition system with fuel safety shutdown feature
  • Anti-splash material feed chutes with safety "flash" deflectors.
  • Stainless steel-lined burner compartment(s) with floating stainless steel deflector plates to enhance burner compartment durability.
  • 2” Insulation jacket between the material tank and exterior panels for superior heat retention and operator safety.
  • Removable steel feed step assembly with side handrails
  • Fork-lift channels installed in the melter base.
  • MRL one-year warranty on MRL fabricated parts.

Configuration Details:

  • Burners per Kettle
    • Single burners only on stand alone units
    • Dual burner option on Pre-Melter Quad units
  • Feed Step Height
    • 24” for all propane power plants
    • 32” for all diesel power plants

The DetailPro Trailer is the ideal solution for contractors looking to expand into more roadwork, intersections, and small-scale projects, as well as for municipalities and DOTs seeking to bring thermoplastic road marking in-house, eliminating the wait for outside contractors.

Designed with flexibility in mind, the DetailPro Trailer can be tailored to meet your specific operational needs. Whether you're handling small jobs and only need a single kettle or require additional capacity for larger projects, we offer configurations that scale with your work.

Freight is F.O.B. Billings, MT 

All units include one (1) day of technical start-up training conducted at the MRL facility in Billings, MT.

  • Configuration
  • Bead Systems
  • Gun Systems
  • Other Options
  • Summary/Quote
  • Model
  • Size
  • Engine Size
  • Fuel Tanks
  • Engine Mount
  • Outlet Valve(s)
  • Material Load Hose
  • Interconnect Valves
  • Colors
  • Summary/Quote
  • Trailer
  • Melter
  • Arrow Board
  • Summary/Quote
  • Model
  • Options
  • Summary/Quote
Left Hand (LH) Thermo Mini Mac
Self-propelled Thermoplastic ride-on detail striper designed to apply ribbon extrusion thermoplastic markings for intersection work, symbols, legends, and short line striping. The Mini 400 is designed to be supplied with heated thermoplastic material from a separate thermoplastic pre-melting kettle not included with the striper purchase.
Right Hand (RH) Thermo Mini Mac
Self-propelled Thermoplastic ride-on detail striper designed to apply ribbon extrusion thermoplastic markings for intersection work, symbols, legends, and short line striping. The Mini 400 is designed to be supplied with heated thermoplastic material from a separate thermoplastic pre-melting kettle not included with the striper purchase.
Single Drop Pressurized Bead System
Includes one (1) Graco bead tank and four (4) bead guns and LaMan dryer extractor
Double Drop Non-Pressurized Bead System
Includes two compartment glass bead hoppers and three (3) additional air-injected bead guns installed.
Double Drop Pressurized Bead System
Includes eight (8) Graco bead guns and two (2) pressurized bead tanks with ¾ hose to bead guns.
13” Single Side Gun with Skid Guard
18” Ribbon Gun Dispensing System with Skid Guard
18” wide ribbon gun with 8” and 12” knife gates to produce 8”, 12”, and 18” lines with an operator switch. Also accepts slides to produce line width choice of single lines as well as double lines, with skip solid capability with the skip timing system.
MRL Quad Ribbon Gun Dispensing System with Skid Guard
Ability to have two (2) simultaneous 4” wide lines in addition to on-the-fly adjustment between 4”, 6”, 8”, and 10” single line width.
Custom 24” Ribbon Gun Dispensing System
Accepts slides to have two (2) simultaneous 4”-3”-4”, 6”-3”-6” wide double lines in addition to slides for 4”, 6”, 8”, and 10” single line width. Also capable of 24” wide markings in a single pass. Includes guide wheel and actuator for level gun height. A gun level system is installed to provide line stability during operation.
Guidance Laser System
Enhances visibility for nighttime work.
Spare Parts Kit
Includes (1) rear spare wheel and tire, (1) front spare wheel and tire, (1) igniter/flame sensor probe kit, (1) compressor drive belt, (1) material pump drive belt, (1) hot oil antune, (1) carriage/pointer bar control switch, (2) 5ft sections of bead hose, (1) propane ring burner assembly, (1) hydraulic filter, (1) propane regulator, (1) propane fuel solenoid, (5) fuses (1,5,7.5,10,30), (1) allan bradley switch, (1) contact block, (1) mac value, (1) 120” hot oil hose, (1) propane vaporizer
MRL Mini Mac Transport Trailer
Bumper pull 7,000lb with 2 axles. Steel construction with wood decking configured for the MM400 and equipment. Approximate bed size of 81” x 192”. Equipped with a quick-release lockdown device for securing the unit during transportation. Includes a 30-gallon non-potable water tank with spigot, spare tire, and jack. This trailer is only for transport and does not include a pre-melter kettle.
Training
On-site customer training at the customer's location.
Wheel Locker Kit
Valve provides electrically actuated traction control for hydraulic systems with one pump and two motors in parallel for better traction.
Custom Color Options
Unit comes standard in lime squeeze. If you choose a custom color for an upcharge, it could add additional time to the completion of the unit.

Custom colors include:
White
Safety Yellow
Traffic Orange
Pre-Melter Single
Pre-Melter Set
Pre-Melter Quad
only available in 3k or 4k size (12,000lb or 16,000lb)
1K
Only available for the Pre-Melter Single Model
1.5K
Only available for the Pre-Melter Set Model
2K
Only available for the Pre-Melter Set Model
3K
Only available for the Pre-Melter Set and Pre-Melter Quad Models
4K
Only available for the Pre-Melter Set and Pre-Melter Quad Models
23 HP Diesel fueled power plant
20 HP Propane fueled power plant
No Power Plant
24 Gallon Diesel fuel tank under the platform
16 Gallon Diesel fuel tank under the platform
Propane tank and mounts
Under the Step
Remote Mounted in Steel Frame
Style: Plug
Style: Knife
Style: Other
please describe
Location: Standard mounting is on the rear of the melter
Location: Corner-mounted
Location: Edgeline (E/L)
Centerline (C/L)
Two five-foot lengths of black hose with SST hose clamps
One five-foot length of black hose with SST hose clamps
Yes
No
Custom Colors
Custom colors are available for an additional charge
  • Paint code: (customer provides)
  • Paint Scheme: (customer provides)
24ft Gooseneck trailer
Trailer provides capacity for up to two (2) Mini Mac Pro 400 units. Trailer has a material storage area with two (2) tie downs for pallets. MRL LED strobe light package. Spare tire mount and matching spare tire and wheel. Pressure-treated 2”8” floorboards. Sealed beam recessed LED lights. Electric brakes on all four wheels. Steel riser fabricated under the melter base. A 4ft x 8ft light arrow board installed on the rear of the melter (rear trailer). Trailer tool box. Water cooler and bracket. Two (2) 10Lb Fire Extinguishers
18ft Bumper Pull trailer
Trailer provides capacity for a single Mini Mac Pro 400 or Handliner units. MRL LED strobe light package. Electric brakes on all four wheels. Pressure-treated 2”8” floorboards. Sealed beam recessed LED lights. The arrow board is only available with a single melter configuration. Trailer tool box. Water cooler and bracket. Two (2) 10Lb Fire Extinguishers
14ft Handliner trailer
Trailer provides capacity for handliner units. MRL LED strobe light package. Four (4) D-rings installed in designed locations for material tie down straps. All wheel electric brakes and emergency break away system. Bumper pull 14,000lb. GVW tandem torsion axle design. Water cooler and bracket. Tongue mounted 10 lb. fire extinguisher mounted to deck.
2K ThermoPro Pre-Melting Kettle Set
One (1) MRL 2K Set, skid-mounted, diesel fired, air-jacketed, vertical design thermoplastic pre-melting kettle set (4,000 lbs. / total melting capacity). A 21 HP Kubota 3 cylinder liquid cooled diesel hydraulic power plant, hydraulic pump, hydraulic reservoir, battery and battery box mounted under the feed step platform. A 24-gallon fuel tank is mounted on the skid platform. (Available to select for the gooseneck and 18ft bumper)
2K ThermoPro Pre-Melting Single Kettle
One (1) MRL 2K Single, skid-mounted, diesel fired, air-jacketed, vertical design thermoplastic pre-melting kettle set (2,000 lbs. / total melting capacity). A 21 HP Kubota 3 cylinder liquid cooled diesel hydraulic power plant, hydraulic pump, hydraulic reservoir, battery and battery box mounted under the feed step platform. A 24 gallon fuel tank is mounted on the skid platform. (Available to select for 14ft, and 18ft) Additional criteria – If arrow board is selected, must also select arrow board mount option
1.5K ThermoPro Pre-Melting Kettle Set

One (1) 1.5k Set capacity Diesel Fired air-jacketed, vertical design thermoplastic pre-melting kettle set (3,000 lbs. total capacity), with a 21 HP Kubota 3-cylinder diesel fueled engine to power the hydraulic requirements, with battery and battery case and hydraulic tank, 16 gallon mounted under the feed step platform.  (Available to select for the 18ft and 14ft)

1.5K ThermoPro Pre-Melting Single Kettle
One (1) 1.5k Single capacity Diesel Fired air-jacketed, vertical design thermoplastic pre-melting kettle set (1,500 lbs. total capacity), with a 21 HP Kubota 3-cylinder diesel fueled engine to power the hydraulic requirements, with battery and battery case and hydraulic tank, 16 gallon mounted under the feed step platform.  (Available to select for 14ft, and 18ft) Additional criteria – If arrow board is selected, must also select arrow board mount option
1K ThermoPro Pre-Melting Kettle Set
One (1) 1k Set capacity Diesel Fired air-jacketed, vertical design thermoplastic pre-melting kettle set (2,000 lbs. total capacity), with a 21 HP Kubota 3-cylinder diesel fueled engine to power the hydraulic requirements, with battery and battery case and hydraulic tank, 16 gallon mounted under the feed step platform.  (Available to select for 14ft)
1K ThermoPro Pre-Melting Single Kettle
One (1) 1k Single capacity Diesel Fired air-jacketed, vertical design thermoplastic pre-melting kettle set (1,000 lbs. total capacity), with a 21 HP Kubota 3-cylinder diesel fueled engine to power the hydraulic requirements, with battery and battery case and hydraulic tank, 16 gallon mounted under the feed step platform.  (Available to select for 14ft, and 18ft). Additional criteria – If arrow board is selected, must also select arrow board mount option
Melter Set Arrow Board (Melter Mount)

4ft x 8ft 25 light LED WANCO multifunction arrow board mounted to melter. Controller mounted near melter.

(only available on melter set configurations)

Melter Set Arrow Board (Rear Mount)

4ft x 8ft 25-light LED WANCO multifunction arrow board mounted to a mounting bracket at the rear of the trailer. Controller mounted near melter. (Only available for single melter configurations)

Air Atomized (AA)

Bridger PaintPro 1-100-AA Tote

Features

  • Isuzu Chassis
  • 1200lb Bead tank
  • (2) Totes
  • Boss Air Compressor
  • 15-Gallon hydraulic tank with dual heat exchanger
  • Pointer bar
  • (2) MRL Toolboxes
  • Aluminum Canopy
  • Safety and warning light package
  • MRL backup camera system
  • 6 GPM Titan pumps
  • Aluminum tailboard 12x72
  • Rear-mounted arrowboard
Airless (ALS)

Bridger PaintPro 1-240-ALS Tote

Features

  • Isuzu Chassis
  • 1200lb Bead tank
  • (2) Totes
  • Boss Air Compressor
  • 15-Gallon hydraulic tank with dual heat exchanger
  • Pointer bar
  • (2) MRL Toolboxes
  • Aluminum Canopy
  • Safety and warning light package
  • MRL backup camera system
  • 6 GPM Titan pumps
  • Aluminum tailboard 12x72
  • Rear-mounted arrowboard
Guidance camera system Write-up

Two (2) HD camera color video guidance system. System includes:

  • LCD flat screen color monitor w/suction mount and padded storage.
  • A video crosshair generator w/controller.
  • Two (2) color cameras w/auto iris lenses mounted inside MRL weather-resistant self-leveling housings.
  • Two (2) electrically actuated camera mounting brackets under striper bed. One (1) edge line and one (1) centerline.
  • Cab mounted, two position image selector switch.