Cab Racks | Base Unit CR

  • Dyna-Tube Extrusion, aerodynamic radius corner shape, high strength — low weight. Offset design to accommodate the new style exhaust systems. 4” Foot assembly provides increased trailer clearance, easier mounting and durability.
  • New T-Beam extrusion provides for a better weight to strength ratio, for improved load resistance. This allows Merritt to decrease T-beam profile by one inch, allowing greater swing room clearance.

  • 5”uprights require less mounting space and give unparalleled load resistance. Seven Mounting Kits available.
  • Great for storage, one door, two door and full three door enclosures are available. Internal shelves and chain hangers are popular options. Keep your storage items out of the weather and out of sight.

Order # Description Shipping Weight
317 Dyna-Light 68" x 70" Radius Corner 122 Lbs.
318 Dyna-Light 68" x 76" Radius Corner 125 Lbs.
319 Dyna-Light 68" x 86" Radius Corner 130 Lbs.
320 Dyna-Light 68" x 80" Radius Corner 128 Lbs.
321 Dyna-Light 73" x 78" For Mack CH series 133 Lbs.
322 Dyna-Light 75" x 86" Radius Corner 140 Lbs.
3750 Dyna-Light 80" x 76" Tall Cab Application 176 Lbs.
370 Diamondback 68" x 70" 45°Corner 122 Lbs.
371 Diamondback 68" x 86" 45°Corner 130 Lbs.
3172 Dyna-Light 68" x 61" Offset 115 Lbs.
3182 Dyna-Light 68" x 64" Offset 117 Lbs.
3192 Dyna-Light 68" x 69" Offset 120 Lbs.
3202 Dyna-Light 68" x 66" Offset 118 Lbs.
3212 Dyna-Light 73" x 68" Offset 126 Lbs.
3222 Dyna-Light 75" x 69" Offset 133 Lbs.
Model #317/318/370 • Conventional Without a Sleeper

Model #317/318/370
Conventional Without a Sleeper

Model #320/319/322/371 • Conv. With Sleeper

Model #320/319/322/371
Conv. With Sleeper

Model #319/320/322/371 • COE With Sleeper

Model #319/320/322/371
COE With Sleeper

Model #320 • COE & Conv. W/Sleeper and Fairing Extensions

Model #320
COE & Conv. W/Sleeper and Fairing Extensions

  • Must be Installed to Merritt Specifications with a Merritt Mounting Kit.
  • Mounting Kits not Included. Reference Mounting Kit
  • Merritt Cab Rack’s are not to be used in conjunction with log trailers or pole trailers.
warningNEVER haul a log trailer or a pole trailer with this cab rack installed. It is a misuse of the cab rack and is strictly prohibited by Merritt Aluminum Products Company.

This cab rack is NOT A SAFETY DEVICE and will NOT PREVENT SERIOUS INJURY or DEATH from forward shifting cargo as a result of an accident or improper securement.

To prevent SERIOUS INJURY or DEATH:

    • ALWAYS secure your cargo in compliance with FMCSA/DOT regulations. See 49 CFR 393 for specific requirements. Be aware of any applicable state motor carrier regulations.
    • NEVER consider this cab rack to be part of your cargo securement system. It is not a substitute for any cargo securement device and does not change any of the cargo securement requirements.
    • NEVER allow cargo to contact cab rack or use cab rack as a tie down point.
    • NEVER haul a log trailer or a pole trailer with this cab rack installed. It is a misuse of the cab rack and is strictly prohibited by Merritt Aluminum Products Company.
    • INSPECT cab rack weekly for cracks or damage. If damaged, replace cab rack.
    • CHECK torque of all bolts every 90 days. Bolts on Moon Brackets 150ft.-lbs. dry.
    • Use cab rack for storing chains and equipment. For more information, visit www.merrittproducts.com
    • ONLY use a Merritt Mounting Kit. If a Merritt Mounting Kit is not used to install a Merritt cab rack, then your cab rack warranty will be void.

WARNING - NEVER reuse a mounting kit.

ALWAYS read and follow the Merritt Mounting Kit Assembly Instructions to ensure proper installation. If you do not have the proper equipment or skill to install the cab rack, take your vehicle to an authorized dealer.

Models and/or Specifications Subject to Change Without Notice.

F.O.B. - Atlanta GA, Birmingham AL, Dallas TX, Henderson CO, Houston TX, Minneapolis MN, Nashville TN, Pittsburgh PA, Sacramento CA, Kansas City KS, Calgary, AB (Canada), Toronto, ON (Canada)

General Dimensions

General Dimensions

Model A B
317/370 68" 70"
318 68" 76"
319/371 68" 86"
320 68" 80"
321 73" 78"
322 75" 86"
3750 80" 76"
3172 68" 61"
3182 68" 64"
3192 68" 69"
3202 68" 66"
3212 73" 68"
3222 75" 69"

Merritt Cab Rack's are not to be used in conjunction with log trailers or pole trailers.
  • 7 models to choose from, to allow you flexibility for your needs.
  • Metal surfaces are Zinc plated for durability and appearance.
  • Dyna-Clamps can be mounted with u-bolt up or down position.
  • Deluxe kit and Problem Solver kits for the times when items block the frame rail and a clamp will not work.
    (drilling required & nuts/bolts/washers not included for the side brackets)
  • Stress blocks are included to fit between the u-bolt and the Cab Rack leg. This spreads the clamping force over a larger area.
DYNA-CLAMP
DYNA-CLAMP*
Order # Description Shipping Weight
324 Dyna-Clamp Kit (17" U-bolts) For Frame Rails 11” Deep or Less 31 Lbs.
325 Dyna-Clamp Kit (21" U-bolts) For Frame Rails Over 11” 33 Lbs.
Designed for most installation needs
PROBLEM SOLVER
PROBLEM SOLVER*
Order # Description Shipping Weight
323 Problem Solver Kit (nuts and bolts not included) 15 Lbs.
Designed for difficult installations in and around air tanks, hanger brackets, crossmembers, fueltanks,etc
DELUXE KIT
DELUXE KIT*
Order # Description Shipping Weight
326 Deluxe Mounting Kit (17" U-bolts) For Frame Rails 11” Deep or Less 25 Lbs.
327 Deluxe Mounting Kit (21" U-bolts) For Frame Rails Over 11” 26 Lbs.
Designed to give an extra option for problem installations. Two Brackets and Two U-Bolts.
3-POINT MOUNTING KIT
3-POINT MOUNTING KIT*
Order # Description Shipping Weight
394 3-Point Mounting Kit (17" U-bolts) For Frame Rails 11” Deep or Less 35 Lbs.
395 3-Point Mounting Kit (21" U-bolts) For Frame Rails Over 11” 36 Lbs.

MOUNTING KIT SELECTION: Merritt offers several mounting kits as indicated in the diagram above. The operator is directed to select the best system for the application. If your installation application requires maximum attachment, we refer you to the 394 and 395 kits. If your installation application could be forced to move or slip on the frame, we refer you to any one of the systems 323, 326, 327, 394, 395 and the short foot which all bolt through the frame as part of the mounting.

*All parts zinc coated for corrosion resistance.

Order 328

Deluxe Option Kit-Full Tray w/Two Locking Chain Racks
Order #328 | Weight 28

Order 363

Deluxe Option Kit-24 Trays w/Two Locking Chain Racks
Order #363 | Weight 24

Order 3400

Full Two or Three Door Enclosures
14" O.D/11” I.D.
317=2 Door
318, 319, 320, 321, 322=3 Door
Order #3400 | Weight 118
W/Polished Aluminum Doors
Order #3401 | Weight 163
W/Stainless Steel Doors

Order 373

Center 373-1
(44 x 10 x 26)
Enclosure 375
(44 x 18 x 27)
Order #373-1 | Weight 55
Order #375 | Weight 67

Order 381

Side Enclosures 9” Deep
Order #381 | Weight 63

Order 340

Full Two or Three Door Enclosures
14" O.D/11” I.D.

317=2 Door
318, 319, 320, 321, 322=3 Door
Order #340 | Weight 118

Order 390

3 Door Deep Drop Enclosure
14" O.D/11” I.D.

319, 320,321 & 322 Models
Order #390 | Weight 116

Order 3402

Jail Bar Three Door Enclosures
14" O.D/11” I.D.
Order 3402 | Weight 118

Order 367

Jail Bar Window
22”W x 25”H
Order #367 | Weight 6

Order 369

E-Z View Window
26 5/8”W x 22 3/16”H
Order #369 | Weight 24

Order 386

E-Z View Full Window
Order #386

Order 3172

Offset LSR
Order Number 3172 | Weight 115

Order 141-1

Top Mount Light Bar, 14” Pad
Order #141-1 | Weight 7

Order 141-2

Top Mount Light Bar, 51.5” Pad
Order #141-2 | Weight 19

Order 393

Beacon Bracket, Fixed
Order #393 | Weight 2

Order 144

Bracket, Load Light
Order #144 | Weight 1

Order 142

Grab Handle, 25”
Order #142 | Weight 1

Order 337

20 3/4" x 30 1/2" Base Tray
Order #337 | Weight 9

Order 230

20” x 24” x 24” Tuck-Away Box
Order #230 | Weight 47

Order 336

Tray Panel Mount
12” x 26”
Order #336 | Weight 8

Order 145

Stop & Turn Light Bracket
Order #145 | Weight 5

Order #145-2
Two round lights for Diamond Back LSR

Order #145-3
Two oval lights

Order 145

Stop & Turn Light Bracket Con't
Order #145-4
Three rounded lights

Order #145-5
Three oval lights*

Order #145-6
One rounded light*

* will not fit on models 317 or 318

Order 147

Chain Rack with Locking Cover
Order #147 | Weight 7

Heavy Duty Chain Rack with Locking Cover
Order #1471 | Weight 9

Order # Description Shipping Weight
128 Chain Rack Without Locking Cover 5 Lbs.
147 Chain Rack With Locking Cover 7 Lbs.
1471 Heavy Duty Chain Rack with Locking Cover 9 Lbs.
333 Tray, 24" Wide 11.25" H x 8.5” D 13 Lbs.
333-18 Tray, 18” Wide 11.25” H x 8.5” D 11 Lbs.
329 Tray, Full Width 11.25” H x 8.5” D 20 Lbs.
332 Divider Panel for Full Width Trays 1 Lbs.
334 Lid Assembly for 24" Tray 4 Lbs.
331 Lid Assembly for Full Width Tray 14 Lbs.
330 Center Compartment w/Lid 26 Lbs.
336 Tray Panel Mount 12” x 26” 8 Lbs.
335 Top Mount Tarp Tray 20 Lbs.
367 Jail bar window, 22” X 25” 6 Lbs.
392 Hose Hanger Assembly 3 Lbs.
341 Enclosure Shelf for Model 340 7 Lbs.
141-1 Top mount light bar, 14” pad 7 Lbs.
141-2 Top mount light bar, 51.5” pad 19 Lbs.
142 Grab Handle, 25” 1 Lbs.
143 Load Light with Lexan Cover 1 Lbs.
144 Bracket, Load Light 1 Lbs.
145 Stop & Turn Light Bracket 5 Lbs.
413 Beacon Bracket, Sliding 9 Lbs.
393 Beacon Bracket, Fixed 2 Lbs.
377 Shelf Center Enclosure, 9” Deep 3 Lbs.
378 JShelf Center Enclosure, 18” Deep 6 Lbs.
379 Retainer, Chain Center Enclosure 3 Lbs.
380 Chain Rack, Single 3 Lbs.
230 20” x 24” x 24” Tuck-Away Box 27 Lbs.