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Can you tell me how much room is needed on the header for this system to mount? I am building a trailer and want to make sure I have enough header to mount this. Thanks | I reached out to M-3 about the dimensions for the Enclosed Trailer Ramp...

Can you please let me know what the outside and the inside hole measurements are? Thank you | The Replacement Drum for M-3 Dual Ramp Springs # DRUM-M-3LH measures 2-1/2 inches wide, with the threaded portion measuring 1-7/16 inches wide. The...

I have a 44foot pace challenger gooseneck with a very heavy ramp door it has a single spring. How heavy of a door can this 96inch double spring lift? | The spring capacity for the Ramp Spring part # CB250D96SHD is 250 lbs. It won't totally lift...

Where are you measuring to get your width so I know which kit to order. Enclosed Trailer Ramp Spring - Dual Spring, 81inch Wide | The M3 Enclosed Trailer Ramp Spring # ERS120D81 is 81-inches wide as measured tip to tip; this is noted in the...

How do the cables mount to the ramp door? | The cables with the Conventional Ramp Door Springs like part # M394FR are attached to the door via anchor brackets which are included with the kit. I have attached below the excerpt from the install...

How deep are the mounting brackets? Thank you. | The mounting brackets for the Conventional Ramp Door Spring # M364FR are 6-1/4" deep and 4" wide. |

Hi, I have a Isuzu Van that we have retro fitted a rear tailgate/ ramp system. At the moment we have a sketchy winch that lifts and lowers it. I would like to put a garage door spring on it like whats listed on your web site. Do you stock a...

I need some info about ramp door springs. My enclosed trailer has garage door springs over head and they are frequently breaking. I wand to add the trailer ramp springs. I see part number RS16933RH My hinges have much smaller hinge pins,...

Can I replace just one side of the spring.The cable drums broke where the cable end holds to | We actually carry the replacement left hand drum # DRUM-M-3LH which is for M-3 Dual Ramp Springs # ERS120D81 and # ERS160D96. Since this can be a...

Can the mounting brackets be moved out to 82inch to mount where my one mounts now? | It is not recommended to adjust any of the parts attached to the main tube of a spring like # CB250D96SHD because of the tension on the springs. Only a certified...

2005 road force by wells cargo trailers my bar that holds the springs measurses 87 3/4 the space from out to out of cable wheels is 83 3/4 does this spring assembly 96inch work or there is a diferrent one that you do have ? | The closest ramp...

how do you know what pound dual springs you need for a door enclosed trailer 94inch | The spring capacity of the torsion style ramps springs like the part # M394FR that you mentioned is how much lifting strength it is capable of if adjusted...

I have a 2006 model 1648 Featherlite enclosed trailer and am looking to put a spring assist for rear door. Can you help in telling me which one would work please? | The spring needed will depend on the inside width of the trailer and the weight...

Ive got a 6x10enclosed trailer the door was made for motorcycles its heavy would the 80# spring just one be enough its all I can do to pick it up and shut by my self should I go with 120# spring Im starting from nothing doesnt have any thing...

what are the technical functions of the cables? i.e. for stability only, to hold door shut, to help opening door , etc. Thx | The cable part # CAB1-8CB150 is a replacement for springs like # CB250D96SHD which is designed to help make raising...

Will the Gorilla Lift work with a Car Mate 24 Enclosed car trailer rear ramp door? If not what other product? | Unfortunately the Gorilla-Lift Utility Trailer Tailgate Lift Assist w/ Cable # GL1 you're looking at is only going to work with on...

Hi, I have a 2008 Jayco Recon 37u Toyhauler. I am I need of the ramp door hinge. the springs and the hinge part are needed. the door itself says Nappanee RV components 08-865021 on a sticker. I have some pictures of the hinge and door I can...

I have a Mission Trailer Door opening is 93inch and inside dimensions is 99. The trailer is a 16x8.5foot trailer with down door. Is the 96inch the right unit CB250D96SHD? | Given the measurements you have provided of the door opening and inside...

We are looking for a 120 volt outside utility or porch light for a converted enclosed trailer. Can you help us? | The only exterior light we currently carry compatible with 120v would be the Exterior LED Utility Light # M337FR. This light is...

Is the unit water proof of does water get into box | The Locking Floor Mounted Storage Box for Enclosed Trailers # M387FR is not waterproof. The latch and lid were not designed to be waterproof as it is to be mounted inside an enclosed trailer....

This is the correct torsion spring for my trailer. A Haulmark 7x16 enclosed trailer. However, all I need is a set of the door cables. Do you sell those separate for this this spring? | We do offer cables alone for enclosed trailer ramp torsion...

I am building a custom trailer with the rear ramp door being 7 foot tall and 66inch wide. I am expecting it to be heavy, so I was/am looking at the ERS160D96 due to its weight capacity. I am wondering what is the minimum width this model will...

I have a 90 inch wide by 96 tall door in my toy hauler was wondering if this system has long enough cables to work with this door. | The M-3 Enclosed Trailer Ramp Spring # CB250D96SHD uses cables that will be plenty long for your application...

Im replacing a single spring system [150 lbs spring] and would like to go with the double spring 230 lbs system due to increase of weight on the ramp. My dimensions are as follows: 82.5inch between mounting brackets 89.75inch from outside...