Mounting
None required
Lock type
Barrel-style key cylinder
Dimensions
10 x 7 x 5 in
Guaranteed Fit
Fast Shipping
Hassle-Free Returns
Description
🏭Made in USA
🔒1-year warranty
🏆Best-selling Equipment Lock device
📘 Overview
The Heavy Duty Cargo Door Lock is the best-selling device Equipment Lock makes, built to secure semi-trailers and sea containers by locking the innermost vertical locking bars together. The heavy-duty part is not marketing: it is 2 in and 2.5 in square tube steel with 3/16 in walls, and the end plates are 6 in tall and 3/16 in thick, which is what a container in a yard for six months needs and a trailer overnight probably does not. Three selections are made on this page. Bar spacing decides whether you need the extension kit — the lock covers 9.75 in to 16 in as standard and the kit extends it to container bars 17 in to 23 in apart. Colour is red or white, a visibility choice only. Keying is Keyed Differently, Keyed Alike to match your existing code, or a four-digit Combination Lock. Nothing is mounted to the trailer or container.
⚙ Key Features of the Heavy Duty Cargo Door Lock
- Square tube steel body — 2 in and 2.5 in tube with 3/16 in walls, which is a genuinely different structure from a formed-plate lock and behaves differently under a bar.
- Six-inch end plates — 3/16 in thick and 6 in tall, spreading load across the bar rather than concentrating it at one contact point.
- Extension kit for container bars — adds coverage from 17 in to 23 in, which is where sea container bar spacing usually sits and where the standard lock stops.
- No mounting required — fits over the existing vertical bars, so it transfers between containers and trailers without modifying either.
- Rated for both trailers and sea containers — one device covers the over-the-road fleet and the yard.
- Barrel-style key cylinder — resists picking, Freon attack and corrosion, and the body is built to take thousands of pounds of force rather than shear off under a pry bar.
🔑 Why the Heavy Duty Version Is the One That Sells
- Matched to long-dwell risk — a container that sits for months is attacked with time and tools, which is the case the heavier section is built for.
- One product spans 9.75 to 23 in — with the extension kit, a mixed yard of trailers and containers standardises on a single lock instead of two.
- No asset modification — leased containers and customer trailers cannot be drilled, and this needs none of that.
- Deterrence at a distance — the red version is recognisable from the gate, which turns away the opportunist before the tools come out.
📊 Heavy Duty Cargo Door Lock Specifications
| Specification | Value |
|---|---|
| Dimensions | 10 x 7 x 5 in |
| Fits | Vertical cargo door bars 9.75 to 16 in apart |
| With extension kit | Container bars 17 to 23 in apart |
| End plates | 3/16 in thick, 6 in tall |
| Construction | 2 in and 2.5 in square tube steel, 3/16 in walls |
| Mounting | None required |
| Finish | Powder coat, red or white |
| Lock type | Barrel-style key cylinder, or four-digit combination |
| Keys supplied | Two per lock |
| Part numbers | Keyed unit HDCDL, combination unit HDCDL-C |
| Warranty | One year against manufacturer defects |
| Origin | Made in USA |
🔄 Do I Need the Extension Kit?
Measure between the two innermost vertical bars. That measurement, and nothing else, decides which version to order.
| Bar spacing | Order |
|---|---|
| 9.75 to 16 in | No Extension Kit — the standard Heavy Duty Cargo Door Lock covers it |
| 17 to 23 in | Extension Kit — typically sea container bar spacing |
If the trailers and containers in your fleet fall on both sides of that line, order the Extension Kit version — it still covers the standard range.
📋 Heavy Duty Cargo Door Lock Options
Three selections are made on this page: the extension kit above, then colour and keying below.
| Keying option | When to choose it on the Heavy Duty Cargo Door Lock |
|---|---|
| Keyed Differently | Each lock gets its own unique key and no key code is kept on file. Choose this when access needs to stay tightly controlled. |
| Keyed Alike | Your key code is kept on file so every future Equipment Lock you buy opens with the same key. If you already have a code on file, select Keyed Alike and enter your assigned key code at checkout. |
| Combination Lock | A four-digit combination replaces the key entirely — the practical choice when several people need access and spare keys go missing. |
Colour is a visibility choice, not a specification — the lock is identical either way. Red is the usual pick where the lock is meant to be seen from across a yard; white suits fleets matching trailer livery.
| Colour | When to choose it |
|---|---|
| Red | Highest visibility — reads as a deterrent from a distance |
| White | Blends with white trailer and box-truck bodies |
Two keys ship with every Heavy Duty Cargo Door Lock at no charge. Additional keys can be added on the product page in packs of 2, 5 or 10 if more people on the crew need access.
🚜 Which Trailers and Containers Take This Lock?
Fitment is decided by the spacing between the two innermost vertical locking bars, and whether you have added the extension kit.
| Application | Version to order |
|---|---|
| Semi-trailer, bars 9.75 to 16 in apart | No Extension Kit |
| Sea container, bars 17 to 23 in apart | Extension Kit |
| Mixed fleet of trailers and containers | Extension Kit — covers both ranges |
| Roll-up doors on containers or box trucks | Use the Heavy Duty Rolling Door Lock instead |
Take the bar measurement before ordering rather than assuming from the equipment type — container bar spacing varies, and it is the number that decides whether the extension kit is needed.
Everything needed to confirm fitment is on this page — add it to your cart to see delivered pricing for your address.
Inspect the shipment before you sign. If the carton or crate arrives damaged, note it on the bill of lading at the time of delivery — that note is what supports a carrier claim, and it cannot be added afterwards.
❓ Heavy Duty Cargo Door Lock Questions, Answered
What bar spacing does the Heavy Duty Cargo Door Lock fit?
As standard the Heavy Duty Cargo Door Lock fits vertical cargo door bars 9.75 in to 16 in apart. With the extension kit it covers container bars 17 in to 23 in apart.
When do I need the extension kit?
Order the extension kit when the two innermost vertical bars are between 17 in and 23 in apart, which is typical sea container spacing. Bars 9.75 in to 16 in apart need no extension kit.
What makes the Heavy Duty Cargo Door Lock different from the standard Cargo Door Lock?
The Heavy Duty Cargo Door Lock is built from 2 in and 2.5 in square tube steel with 3/16 in walls and carries 6 in tall end plates 3/16 in thick, and it accepts an extension kit for container bar spacing. The standard Cargo Door Lock covers 9.75 to 16 in only and is the lighter build.
Can the Heavy Duty Cargo Door Lock be used on a sea container?
Yes — sea containers are one of the two applications it is built for, alongside semi-trailers. Check the bar spacing to decide whether you need the extension kit.
Does the Heavy Duty Cargo Door Lock have to be bolted on?
No. It requires no mounting and fits over the existing vertical locking bars, so it can be used on leased containers and customer trailers without modifying them.
Does the colour change the specification?
No. Red and white Heavy Duty Cargo Door Locks are identical; the choice is visibility against your equipment.
How do I choose between Keyed Alike, Keyed Differently and a combination?
Keyed Alike keeps your five-digit key code on file, so every Equipment Lock you buy afterwards can be cut to the same key — one key for the whole yard. Keyed Differently keeps no code on file and each lock is unique, which is the tighter choice when you want access limited to one machine. If you already have a code, select Keyed Alike and enter it at checkout.
How do I set the code on the combination Heavy Duty Cargo Door Lock?
Combination units arrive set to 0-0-0-0 and you set your own four-digit code with the supplied key while the lock is open. There is deliberately no factory override code, so write the code down before you lock it — once it is locked with a forgotten code the internal components have to be replaced.
What does the Heavy Duty Cargo Door Lock warranty cover?
Equipment Lock covers manufacturer defects for one year from purchase. Damage from a theft attempt, user error or modification falls outside that cover. Email support@eskidsteer.com with your order number to start a claim.
How is shipping calculated on the Heavy Duty Cargo Door Lock?
Shipping is calculated at checkout. Add the Heavy Duty Cargo Door Lock to your cart, enter your delivery address, and the shipping charge is shown before you complete the order.
📥 Heavy Duty Cargo Door Lock Downloads
- Heavy Duty Cargo Door Lock operating instructions (PDF)
- Extension kit fitting instructions (PDF)
- Standard vs Heavy Duty Cargo Door Lock comparison (PDF)
- Keyed vs combination locks explained (PDF)
🎥 Heavy Duty Cargo Door Lock Video
Shipping
The following are estimated processing and delivery times. We make every effort to fulfill orders as quickly as possible.
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Shipping fee:
Delivery Time= Handling time +Transit Time:
Handling time: 3-3 Days
Transit time: 5-8Days
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Change of Address:
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Phone: +1 8667578337
Email: support@eSkidsteer.com
Address: 30 North Gould St Suite R, Sheridan, WY 82801, USA
Returns
Returns
We offer returns and exchanges in limited circumstances as follows:
- In order to submit a return, you must contact us by email at support@eSkidsteer.com for us to confirm the items ordered are eligible for return or exchange;
- To be eligible for a return, you must commence the return process within 30 days of your item being delivered to you and:
- it must be unused, for example, once an item is hooked up to an attachment plate, hydraulic lines or electrical connection, it will not be eligible for return. Likewise, if your item shows any sign of use, which we may determine in our sole and absolute discretion, we will not accept the return;
- it must be in the same condition you received it in. You will be required to send us timestamped photos of the condition of your items as a condition to determine your eligibility for the return or exchange; and
- it must be returned in the same packaging or containers as it was received in.
We do not accept returns for products that were listed as final sale items at the time of purchase.
You agree to pay a 25% restocking fee on all returns, which we will deduct from any refund owing to you.
After the above referenced 30-day period, unfortunately we cannot offer you a refund or exchange, under any circumstances.
If your return or exchange is approved, we will provide instructions on shipping your items back to us or the applicable supplier via email.
You agree that you shall be responsible for all return shipping costs and related expenses.
Our shipping cost to you is not refundable.
You are also responsible for ensuring the items are carefully packaged for shipment and that risk of loss or damage during return shipping shall be your sole liability. You may wish to obtain insurance while the returned items are in transit.
Lost or Damaged
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In the event the item is lost or damaged on arrival, we will assist you with filing a reimbursement claim directly with the applicable supplier or shipping company as applicable. However, you agree that as we are not the direct supplier of the items, it shall be your responsibility to pursue any claims with the applicable supplier in the event your lost or damaged item is not replaced by the supplier or carrier.
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Warranties Offered by Third Parties
Our third party suppliers and manufacturers may offer limited warranties on certain products sold on the Website. You may contact us and we can refer you to the applicable supplier or manufacturer if you wish to inquire about the details of any such warranties offered by those third parties. You agree that we shall not be liable or responsible for any warranties granted by such third parties.
To the extent products you order from us have warranties provided by a third party supplier or manufacturer, upon your request we agree to reasonably assist with the submission of warranty claims to such third parties. However, we make no guarantees that any warranty claims will be successful. You agree it is your responsibility to ensure warranty claims are submitted within the applicable timeframe to the applicable supplier or manufacturer.
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