Start with the GWM Cannon parts collection, or go to the Cannon cover-option comparison below if you are choosing a lid now.
Work tools, shopping and camping gear place different demands on a ute tub. A cover may help with exposure and privacy, but its value depends on how you load the vehicle and what remains accessible after the rails and front housing are installed.
This guide uses Australian ute terminology and focuses on cover selection and fitment. It does not assume the same tub across model generations, Cannon Alpha, related GWM trucks or aftermarket trays.
Does a roller shutter suit the way you use your tub?
Choose the opening style before choosing the model label. Think about whether you frequently load tall equipment, reach for tools through a partial opening, or need the cover removed altogether.
| Cover type | Practical difference | Check on the actual product |
|---|---|---|
| Soft roll-up | A flexible cover with its own fastening and rail arrangement. | How it opens, stows or removes, plus weather and locking limits. |
| Folding cover | Panels fold and occupy a folded footprint or stand-up space. | Panel position, sightlines, usable opening and removal method. |
| Roller shutter | A slatted cover retracts towards a front housing. | Housing intrusion, rails, tailgate interface, operation and any drainage system. |
The EVparts4x4 item is listed as a roller-shutter lid. If you specifically need a soft cover, folding panels or quick removal, confirm that requirement rather than assuming all products called “tonneau covers” work the same way.
For a fridge or toolbox near the cab, the space taken by the housing may matter more than the outside tub length. Check the lid’s opening arc and the cargo envelope before deciding a retractable cover suits the job.
Which Cannon and which listed option should you check?
Record the original delivery market, build date, exact model, grade and body type. Confirm whether you have a factory pickup tub or a tray fitted to a cab-chassis vehicle, then identify the sports bar, liner and existing rail-mounted equipment.
The GWM Australian Cannon brochure distinguishes pickup tubs and cab-chassis trays and cautions that dimensions should be checked before fitting accessories. Brochure tub dimensions are background information, not this shutter’s installation specification.
| Current Cannon option | What the label tells you | Still needed before ordering |
|---|---|---|
| Standard Cargo Box | A Cannon-labelled standard-box selection. | Its actual rail/opening fitment range, mounting layout and matching vehicle configuration. |
| Longened | A separately listed Cannon selection labelled as longer. | The intended tub and actual dimensions; do not infer them from the name. |
The same product page also contains Steed, Wingle and KingKong choices. Check the selected vehicle name as well as the size label. These are alternative configurations, not evidence that one shutter fits every model or that all configurations ship together.
Compare the two Cannon-labelled options
Open the relevant product selection and compare the supplied fitment information with your measurements. Neither label alone confirms fit.
View Cannon Standard option and fitment requirements
View Cannon Longened option and confirm dimensions
How should you measure the tub for a roller cover?
Measure the surfaces the cover will actually use. The tub floor, the opening at rail height and the space available for cargo are different measurements. Photograph the tape position and record dimensions in millimetres so the supplier can compare like with like.
| Measurement or photograph | What to record | Why it helps |
|---|---|---|
| Opening length | Front-to-rear distance at the intended installation level with the tailgate closed. | Matches the rail and closure arrangement rather than a floor-length estimate. |
| Opening width | Inside width at the front, middle and rear at the same reference height. | Shows taper and differences along the opening. |
| Rail section | Top capping, inner lip, underside access and any liner overlap. | The clamp or bracket must match the available mounting surface. |
| Front and tailgate interfaces | Bulkhead shape, tailgate top edge and existing seals or fittings. | Checks closure and seal contact. |
| Accessory positions | Sports-bar feet, fasteners, brackets, sockets and other rail equipment. | Locates possible shared mounting or clearance conflicts. |
| Cargo envelope | Toolbox, drawer or fridge dimensions and the room needed to open them. | Checks usable space beneath the housing and between the rails. |
Width between the wheel arches helps plan a drawer or floor load; it is not a substitute for cover-opening width. If the fitting drawing specifies outer rail dimensions, diagonals or additional reference points, record those separately using the same definitions.
Do not choose a variant solely because a brochure lists a familiar tub size. Ask the supplier to identify the matching cover dimensions and installation drawing for your actual measurements.
Will the sports bar, liner, drawers and fridge still work?
A cover can fit the bare opening yet conflict with equipment already installed. Check the complete arrangement before ordering: physical clearance, shared fasteners, drainage access and normal use all matter.
- Sports bar: show its feet and fasteners. Confirm whether rails pass beside them, require a documented adapter or need another approved arrangement.
- Liner and rail capping: identify spray-on coating versus a separate moulded liner, especially any material wrapping over the rail or mounting lip.
- Front housing: request installed width, height and intrusion into the tub, not just an overall catalogue size.
- Drawers and fridge: check the complete opening movement, slides and lids underneath the housing and between the guide rails.
- Tailgate and access: verify closure, any step, lock access, sockets, drains and tie-down points.
- Bars and cargo loads: a cover is not automatically a rated support for racks, people or a rooftop tent. Any such load needs its own documented mounting and rating.
Draw or photograph the intended arrangement with the moving parts open. A fridge box that fits when closed may still have a lid that strikes the housing; a matching sports-bar name does not establish a shared mounting solution.
What should one selected cover package include?
Request a labelled packing photograph and component list for the selected Cannon option. Establish what is included in the purchase and what must be supplied separately.
- Cover and housing: the configuration and dimensions matched to the selected vehicle.
- Rails and fittings: guide rails, clamps or brackets, fasteners and any vehicle-specific adapters supplied.
- Locks and operation: lock arrangement, keys, operating method and removal or service access.
- Seals and water management: supplied seals and any required drain components or routing instructions.
- Lighting: the function, power source, switching, wiring and mounting instructions for the version labelled “Thickened with Light”.
- Documentation: the correct fitting and maintenance instructions for the selected configuration.
These are items to verify, not a statement that every item is supplied. The word “Light” does not establish electric opening, smartphone control or a particular voltage. A separate remote-lock accessory should not be mistaken for the complete cover.
View Cannon Standard option and fitment requirements
What can a cover do about rain, dust, theft and moving cargo?
A cover adds a barrier at the tub opening, but the result depends on the rails, front interface, seals, tailgate and any drainage system. It does not establish that the whole tub is waterproof or dustproof.
Ask how water is collected and discharged for the actual cover. Keep required drains accessible, maintain seals as instructed and use suitable protective storage for moisture-sensitive equipment. A dry result on another owner’s ute is not a guarantee for every installation.
Keeping items out of view and using a lock can be useful, but neither proves theft resistance. Confirm how the cover lock and tailgate work together, and avoid treating a locked cover as a substitute for an appropriate storage and security plan.
Cargo still needs suitable restraint. Transport Victoria’s load-securing guidance explains that the restraint method depends on the load. Follow the rules where you drive and the vehicle and restraint instructions; a closed lid does not by itself verify that tools or boxes are restrained.
Account for the cover’s complete installed mass alongside other accessories and cargo. Request that figure for the cover, rails and fittings rather than treating shipping weight as installed mass. No fuel-saving percentage or additional payload is established here.
What should you agree before installation and payment?
Start with the selected cover’s fitting guide. A clamp-mounted rail does not establish that the whole job is free of drilling, liner work, drain routing or electrical work. Agree the complete scope for your vehicle before relying on an installation-time label.
- Confirm the vehicle and measurements: match the exact Cannon tub and equipment to the selected variant and installation drawing.
- Check the delivered package: verify the documented parts and photograph any mismatch before modifying or fitting them.
- Trial-check the layout: establish rail, housing, sports-bar and tailgate clearances before permanent work.
- Plan water and power: agree any drains, permitted modifications and lighting connections from the correct instructions.
- Complete the specified checks: follow the maker’s fastener, operation, lock, drainage and maintenance procedures.
- Review the complete cost: include selected parts, any adapters, installation, delivery and applicable charges.
Send a useful fitment enquiry
Include your delivery market, build date, exact model and body type; opening measurements; sports-bar and liner photographs; storage dimensions; preferred Cannon option; and delivery postcode.
Ask for the matching installation dimensions, labelled packing list, mounting and drainage requirements, lighting details, installed mass and complete delivered quote in your chosen currency.
Check the live selected-currency total and the shipping policy and return conditions before paying. Confirm the actual shipment method and timing for your option instead of treating a generic delivery banner as a product-specific quotation.
View Cannon Standard option and fitment requirements
View Cannon Longened option and confirm dimensions
Send your tub measurements and accessory photographs
For the separate task of checking combined vehicle load, see our Cannon towing and payload checks. Use your actual vehicle’s limits and documentation.
GWM Cannon tonneau cover FAQ
How do I choose Standard Cargo Box or Longened?
Use your actual opening measurements and the cover’s installation drawing. The labels identify separate Cannon options but do not publish a measured fitment range. Confirm the intended tub before choosing.
Does a brochure tub size of 1520 by 1520mm confirm fit?
No. A brochure dimension is not the cover’s installation specification. Measure the intended mounting level, rail profile, closure interfaces and accessory positions, then obtain the matching cover dimensions.
Will this fit Cannon Alpha or an aftermarket tray?
Do not assume so. Identify the exact vehicle, body and tray or tub. A Cannon-labelled selection does not establish Alpha or custom-tray compatibility.
Can I keep my existing sports bar?
Possibly, if the cover and bar have a documented compatible mounting arrangement. Send photographs of the feet and fasteners and confirm rails, adapters and access before ordering.
Will my fridge or drawer system still open?
Compare the installed housing intrusion, rail height, remaining opening and the full movement of lids and slides. Matching the outside tub dimensions alone is not enough.
Does one order include every vehicle option listed?
Do not read the model list as a nine-cover packing list. Confirm the exact selected vehicle configuration and all components and quantities supplied for that purchase.
What does Thickened with Light mean?
Ask for the material and thickness specification plus the light’s actual function, power source, wiring and switching instructions. The label alone does not establish those details.
Does the light label mean the cover opens electrically?
No electric-opening function is established by that label. Confirm the operating method and any separate controls for the exact version before ordering.
Will the whole tub be waterproof or dustproof?
No complete waterproof or dustproof result is established. Interfaces, seals, the tailgate and drainage affect the result. Protect sensitive equipment separately and follow maintenance instructions.
Does closing the lid secure loose tools for driving?
Do not rely on the cover alone. Use an appropriate restraint arrangement for the load, anchors and vehicle, and keep required tie-down points accessible.
Does clamp-on mean the whole installation needs no modifications?
Not automatically. Confirm rail mounting, liner clearance, any drainage routing and lighting work for the actual vehicle before agreeing the installation scope.
What should I confirm before paying?
Confirm the exact Cannon option, installation dimensions, accessory clearances, supplied parts, fitting and drainage method, lighting requirements, installed mass and complete delivered price and terms.
