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.

Dyna-Light LSR - Pictured W/328 Kit

Limited Security Racks-LSR Base Unit
Order # Description/Dimensions Shipping Weight Maximum Static Load Resistence
317 Dyna-Light 68" x 70" Radius Corner 122 Lbs. 25,030 Lbs.
318 Dyna-Light 68" x 76" Radius Corner 125 Lbs. 25,695 Lbs.
319 Dyna-Light 68" x 86" Radius Corner 130 Lbs. 26,009 Lbs.
320 Dyna-Light 68" x 80" Radius Corner 128 Lbs. 23,798 Lbs.
321 Dyna-Light 73" x 78" For Mack CH series 133 Lbs. 23,042 Lbs.
322 Dyna-Light 75" x 86" Radius Corner 140 Lbs. 22,519 Lbs.
3750 Dyna-Light 80" x 76" Tall Cab Application 176 Lbs. 24,557 Lbs.
370 Diamondback 68" x 70" 45°Corner 122 Lbs. 24,058 Lbs.
371 Diamondback 68" x 86" 45°Corner 130 Lbs. 26,235 Lbs.
3172 Dyna-Light 68" x 61" Offset 115 Lbs. 23,585 Lbs.
3182 Dyna-Light 68" x 64" Offset 117 Lbs. 23,585 Lbs.
3192 Dyna-Light 68" x 69" Offset 120 Lbs. 23,585 Lbs.
3202 Dyna-Light 68" x 66" Offset 118 Lbs. 23,585 Lbs.
3212 Dyna-Light 73" x 68" Offset 126 Lbs. 23,585 Lbs.
3222 Dyna-Light 75" x 69" Offset 133 Lbs. 23,585 Lbs.
Merritt LSR's are not to be used in conjunction with log trailers or pole trailers.
  • Dyna-Light and Diamond Back LSR’s have been tested by an independent engineering firm for maximum uniformly distributed static load.
  • Must be Installed to Merritt Specifications with a Merritt Mounting Kit.
  • Mounting Kits not Included. Reference Mounting Kit - Page 3A and 3B
  • Merritt LSR’s are not to be used in conjunction with log trailers or pole trailers.
WARNING LIMITED RESISTANCE TEST
Each model LSR has been designed and tested in con- junction with Merritt Mounting Instructions. Each model LSR has been tested to resist a maximum uni- formly distributed static load as stated above.

Each model LSR offers limited resistance against impact. Merritt Equipment Co. makes no represen- tations, implied or otherwise, except for the uniformly distributed static load resistance test as stated above. Any load or force in excess of the uni- formly distributed static load resistance test may result in failure of this product which can result in seri- ous injury or death.
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)
Download the pdf for this item
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"
LSR Available Options-Add to your base unit
Click to enlarge images
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 #145-4
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


Mounting Kits
Merritt LSR'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 LSR leg. This spreads the clamping force over a larger area.
DYNA-CLAMP*
Order # Description/Dimensions 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
DYNA-CLAMP
PROBLEM SOLVER*
Order # Description/Dimensions 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
PROBLEM SOLVER
DELUXE KIT*
Order # Description/Dimensions 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.
DELUXE KIT
3-POINT MOUNTING KIT*
Order # Description/Dimensions 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.
3-POINT MOUNTING KIT
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.

Download the pdf for this item
Option Description/Dimensions/Weight
Order # Description/Dimensions 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 5 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/td> 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.
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