Alu-Cab RT-4S 4-Person Rooftop Tent
Alu-Cab's biggest rooftop tent ever, built for families, crews, and overlanders who want room to actually stretch out.
The Alu-Cab RT-4S Rooftop Tent is a full-size, 4-sleeper hard shell rooftop tent designed for families, larger groups, and serious adventure travellers who refuse to compromise on space or comfort. Inspired by the success of Alu-Cab's ModCAP Family Camper, the RT-4S brings that big-sleeping-platform concept into a standalone rooftop tent that can be mounted to suitable SUVs, trucks, canopies, and roof rack systems.
With more than 4.5m² of sleeping space, a massive 2235mm x 2050mm sleeping area, integrated ladder support, double-layer ripstop blackout canvas, built-in power, solar-ready wiring, heater venting, and dual-colour LED lighting, the RT-4S is built for extended trips and real-world overland use.
If you're building the ultimate vehicle-based camping setup for your family, your crew, or simply yourself with no interest in feeling cramped, the RT-4S is the big rooftop tent you've been waiting for.
Why Choose the Alu-Cab RT-4S?
- Alu-Cab's Largest Rooftop Tent with over 4.5m² of sleeping space
- True 4-Sleeper Design for families, groups, and extra-room comfort
- Side-Opening Flip-Out Bed Platform for added sleeping space and headroom
- Left or Right-Side Opening Options to suit your vehicle setup
- Double-Layer 280gsm UV-Resistant Ripstop Canvas
- Integrated Power System with USB, USB-C, and 12V outlets
- Solar-Ready Wiring with Anderson plug integration
- Built-In Heater Vent for improved cold-weather comfort
- Dual-Colour LED Lighting with red and white light modes
- Integrated Telescopic Ladder that stows neatly inside the tent
Why We Like It
The RT-4S is not just a larger rooftop tent. It's a different style of rooftop camping altogether. Most hard shell tents are built around a compact clamshell layout. The RT-4S uses a flip-out side bed design to create the kind of sleeping space families and groups actually need.
We like it because it solves a real problem. If you want Alu-Cab durability, fast setup, hard shell construction, and enough room for more than two people, this is the tent that finally makes that possible without moving into a full camper system.
Ideal For
- Families and larger camping groups
- Overlanders who want maximum rooftop sleeping space
- Truck canopy and SUV builds with sufficient roof capacity
- Extended road trips and multi-day backcountry travel
- Customers comparing rooftop tents against compact camper systems
- Anyone who wants more room than a traditional 2-person hard shell tent
Optional Extras
The RT-4S can be paired with select Alu-Cab accessories to expand your adventure setup:
- Load Bars for compatible roof-mounted accessories and light cargo
- Roof Rack Tray for additional gear storage
- 270° Shadow Awning for fast wraparound shade and weather protection
- Alu-Table for a practical camp kitchen, prep, or work surface
Please note: Gen 3-R backrest and interior drop-down table accessories are not compatible with the RT-4S. Shower Cube use is not recommended when an awning is installed.
Key Features
- Lightweight aluminum frame construction
- Hard shell rooftop tent design
- Flip-out side bed with integrated ladder support
- Available in left-hand or right-hand opening orientation
- Double-layer 280gsm UV-resistant ripstop canvas
- 3-point access
- 12 integrated canvas storage bags
- Flysheet included
- Marine-grade UV-resistant clear PVC skylight
- Raised external air vent
- Built-in heater vent
- Light bedding can be stored at the rear when closed
- Integrated cargo rails for compatible accessories
- Telescopic ladder stores inside the tent
Power, Lighting & Comfort
- 2 x USB ports
- 4 x USB-C ports
- 2 x 12V car-style auxiliary sockets
- 2 x dual-colour red / white LED lights with dedicated switches
- Solar-ready wiring with Anderson plug integration
- Built-in heater vent for cold-weather camping support
- Clear skylight for ventilation, natural light, and stargazing
Technical Specifications
| Product Code | RT-4S-B |
| Open Dimensions | 2400mm x 2183mm |
| Closed Dimensions | 2400mm x 1400mm |
| Sleeping Area | 2235mm x 2050mm | 88 in x 81 in |
| Sleeping Capacity | Designed as a 4-sleeper rooftop tent |
| Weight with Mattress & Ladder | Approximately 127kg | 279 lbs |
| Weight without Mattress & Ladder | Approximately 118kg | 260 lbs |
| Closed Static Roof Load Rating | 200kg | 440 lbs |
| Closed Dynamic Roof Load Rating | 50kg | 110 lbs |
| Open Static Roof Load Rating | 30kg | 66 lbs |
| Ladder / Fold-Out Section Capacity | 150kg | 330 lbs |
| Canvas | Double-layer 280gsm UV-resistant ripstop canvas |
| Lighting | 2 x dual-colour red / white LED lights |
| Power | 2 x USB, 4 x USB-C, 2 x 12V auxiliary outlets |
| Flysheet | Included |
Mounting & Vehicle Compatibility
The Alu-Cab RT-4S is a large rooftop tent and requires a properly rated mounting platform. It can be mounted to suitable SUVs, truck canopies, and roof rack systems with sufficient roof area and load capacity.
Alu-Cab recommends mounting the RT-4S using:
- Alu-Cab Load Bars with Low Profile Feet
- Universal load bar brackets for compatible aftermarket bars
- 3 load bars recommended, minimum 1450mm width
Because of its size and weight, proper fitment matters. Contact Cap-it before ordering if you are unsure whether the RT-4S is right for your vehicle, canopy, or rack system.
Professional installation is available through participating Cap-it locations.
Shipping Across Canada
Cap-it ships Alu-Cab products across Canada. Whether you're building your adventure vehicle in British Columbia, Alberta, Ontario, Quebec, or anywhere in between, we can help get your RT-4S delivered and ready for the road.
Frequently Asked Questions
Is the RT-4S really a 4-person rooftop tent?
Yes. The RT-4S is designed as a 4-sleeper rooftop tent with a large 2235mm x 2050mm sleeping area.
Can light bedding stay inside when closed?
Yes. Light bedding can remain stored at the rear of the tent when packed properly.
Is the RT-4S solar compatible?
Yes. The RT-4S is solar-ready with Anderson plug integration.
Does the RT-4S include a ladder?
Yes. The RT-4S includes an integrated telescopic ladder that stows neatly inside the tent when closed.
Does the ladder support the fold-out section?
Yes. The ladder acts as part of the support system for the fold-out bed section and is rated to 150kg | 330 lbs.
Can the RT-4S open on either side of the vehicle?
The RT-4S is available in left-hand or right-hand opening orientation. Choose the orientation that best suits your vehicle and campsite setup.
Will Alu-Cab Shadow Awnings work with the RT-4S?
Yes. The RT-4S is compatible with Alu-Cab 180° and 270° Shadow Awnings when installed with proper clearance.
Is the Shower Cube recommended with an awning installed?
No. Shower Cube use is not recommended when an awning is installed.
Are the Gen 3-R backrest and drop-down table compatible with the RT-4S?
No. Those accessories are not compatible with the RT-4S.
Do you offer installation?
Yes. Professional installation is available through participating Cap-it locations.
Do you ship across Canada?
Yes. Cap-it ships Alu-Cab products Canada-wide.
Product Summary
The Alu-Cab RT-4S is Alu-Cab's largest 4-sleeper hard shell rooftop tent, designed for families, groups, and overlanders who want maximum sleeping space without moving into a full camper system. With a flip-out side bed platform, integrated ladder support, double-layer canvas, built-in power, solar-ready wiring, heater venting, skylight, flysheet, and a massive sleeping area, the RT-4S delivers big comfort for serious adventure travel.
Why Buy From Cap-it?
Since 1977, Cap-it has helped Canadians build trucks and adventure vehicles for work, travel, and exploration. As Canada's Home for Alu-Cab, we provide expert advice, professional installation, Canada-wide shipping, and one of the largest selections of Alu-Cab products in the country.
Designed for Adventure®
Video Overview
