Main bolts onto the G450.
Main connects directly at the G450 doorway zipper. Adds 100 cm of covered floor — one cot crosswise, or a generous gear porch under the canopy.
BRAND:
Gopamir
Gopamir G450 Vestibule
SHIPS FROM KOREA · Cut-off in 4 days
Reserve by June 22 to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
EXPRESS AIR · Reserved for our July 8 flight
Reserve by July 1 to lock this flight — 13 days left
Ready for pickup / ship-out from July 17
Korea-direct · duty-free · full manufacturer warranty
. Express Air Charge: $20.00 CAD . Free local shipping on orders over CAD $300
Reserve by June 22 to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
EXPRESS AIR · Reserved for our July 8 flight
Reserve by July 1 to lock this flight — 13 days left
Ready for pickup / ship-out from July 17
Korea-direct · duty-free · full manufacturer warranty
. Express Air Charge: $20.00 CAD . Free local shipping on orders over CAD $300
Compatible add-ons curated to pair with Gopamir G450 Vestibule.
Be sure to select the right options.
Gopamir G450 Vestibule
Precio de oferta$439.00 CAD
SHIPS FROM KOREA · Cut-off in 4 days
Reserve by June 22 to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
EXPRESS AIR · Reserved for our July 8 flight
Reserve by July 1 to lock this flight — 13 days left
Ready for pickup / ship-out from July 17
Korea-direct · duty-free · full manufacturer warranty
. Express Air Charge: $20.00 CAD . Free local shipping on orders over CAD $300
Reserve by June 22 to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
EXPRESS AIR · Reserved for our July 8 flight
Reserve by July 1 to lock this flight — 13 days left
Ready for pickup / ship-out from July 17
Korea-direct · duty-free · full manufacturer warranty
. Express Air Charge: $20.00 CAD . Free local shipping on orders over CAD $300
HOW IT EXTENDS THE G450
Four things to plan around.
From single-cot porch to indefinite chain — and the single-attachment rule that ties it together.
Add Extension for two cots.
Main + Extension = 220 × 240 cm of covered length. Two cots fit end-to-end, or one cot with a full gear vestibule alongside.
Chain more for more length.
Each Extension has its own front skin that accepts the next one. Three, four — the system extends until you run out of ground or stakes.
FULL SPECS
Numbers by Type.
Main and Extension share fabric, pole, and zipper — they differ in footprint, weight, and what ships in the box.
MAIN FOOTPRINT
220 × 100 × 165 cm
W × L × H
EXTENSION ADDS
+ 220 × 140 cm
per unit, chainable
CAPACITY
1 cot Main · 2 cots +Ext
lengthwise
ZIPPER
4-way
partial or full opening
Specifications
- BRAND
- Gopamir
- FITS
- Gopamir G450 Air Shelter (Sand Brown / Dark Green)
- COLORS
- Sand Brown, Dark Green (Black coming later)
- TYPE — MAIN
- Attaches directly to G450 body front doorway. Required base for any Extension chain.
- TYPE — EXTENSION
- Attaches to Main front skin (or to another Extension). Cannot attach to G450 body directly.
- FOOTPRINT (MAIN)
- 220 cm W × 100 cm L × 165 cm H 87 × 39 × 65 in
- FOOTPRINT (EXTENSION)
- 220 cm W × 140 cm L × 165 cm H 87 × 55 × 65 in · per unit
- FABRIC
- N40D Double Ripstop · both-side silicone coating (same on both Types)
- POLE
- Aluminum support pole(s) · included with each Type
- ZIPPER
- 4-way · partial or full opening (same on both Types)
- FRONT SKIN ATTACHMENT
- Single zipper line on each Type · accepts one accessory at a time — mesh window (Main only, included), TPU door (sold separately), or next Extension
- MESH WINDOW
- Included with Main Type only. Extension Type does not ship a mesh window.
- WEIGHT (MAIN | EXTENSION)
- 1.45 kg | 1.10 kg 3.2 lbs | 2.4 lbs · mesh and pole excluded
- CAPACITY (MAIN ALONE)
- 1 cot crosswise · 1-person sleeping
- CAPACITY (MAIN + 1 EXTENSION)
- 2 cots lengthwise · 2-person sleeping
- CAPACITY (BEYOND)
- Chain additional Extensions indefinitely · 3rd cot at MAIN + 2× EXT, and so on
- KIT WEIGHT
- 5.0 kg per Type 11.0 lbs · full shipping weight
- INCLUDES (MAIN)
- Vestibule body × 1, mesh window panel × 1, aluminum pole set × 1, storage bag × 1
- INCLUDES (EXTENSION)
- Vestibule body × 1, aluminum pole set × 1, storage bag × 1 (no mesh window)
- SEAM TREATMENT
- Waterproof seam thread + zigzag stitching · NOT seam-taped (silicone coating incompatible with tape adhesive)
- LEAK CARE
- If leaks develop in heavy rain, brand recommends applying silicone seam sealer to affected areas
- WARRANTY
- 1-year manufacturer (both Types)
Compatibility
- Gopamir G450 Air Shelter Main Type attaches to G450 body — match Sand Brown to Dark Green
- Another Gopamir G450 Vestibule (Extension Type) Extensions chain forward from Main (or from another Extension) — order this product again with Extension Type
- Gopamir G450 Vestibule TPU Door Attaches to either Main or Extension front skin in place of the mesh window or the next Extension
- G450 body (Extension Type direct attach) Extension Type does NOT attach directly to the G450 body — Main Type is required between them
The Main Type attaches to the G450 body — color-match. The Extension Type attaches only to a Main front skin (or to another Extension in a chain) — it cannot attach to the G450 body directly. The front-skin zipper line accepts one accessory at a time: included mesh window (Main only), TPU door (sold separately), or the next Extension. Swap by unzipping one and zipping in the next.
IN THE BOX
What ships, by Type.
Mesh window comes with Main. Extension ships lighter and skips the mesh.
Included
- Vestibule body × 1 (each Type)
- Aluminum pole set × 1 (each Type)
- Storage bag × 1 (each Type)
- Mesh window panel × 1 (Main Type only)
Not included
- Mesh window panel — not included with Extension Type (only with Main)
- TPU door — sold separately (fits both Types)
- Additional Extensions for longer chains — sold separately
- G450 body — Main attaches to it but is sold separately
FREQUENTLY ASKED
Main, Extension, mesh, and the chain.
Most questions come down to which Type to start with and how the front-skin slot works.
Should I start with Main or Extension?
Start with Main. The Main Type is the anchor that attaches to the G450 body — Extensions only attach forward of a Main (or another Extension). If you're sleeping solo or using it as a gear porch, Main alone is enough. Add Extension Type when you need two cots lengthwise or a longer covered corridor.
Can I attach the Extension Type directly to the G450 body?
No. The Extension Type attaches only to a Main front skin — or to another Extension already in the chain. The G450 body does not accept the Extension directly. If you don't own the Main yet, add it to your order alongside the Extension.
Why doesn't the Extension Type include a mesh window?
The mesh window ships with Main as the default front-skin attachment. The brand's logic is that one mesh window covers any vestibule chain — you move it to whichever front skin needs ventilation that trip. Skipping a duplicate mesh on the Extension keeps the price lower per unit.
Can the front skin take mesh + TPU + Extension at the same time?
No. Each front skin has only one zipper line, so only one accessory connects at a time. Unzip one to zip another — mesh for airflow, TPU for tinted daylight, or Extension for more length. Plan the configuration before pitching.
Can I chain three or four Extensions together?
Yes. Each Extension Type has its own front skin that accepts the next Extension. Chain as many as your site, stakes, and patience allow. The brand explicitly describes the system as indefinitely extendable.
Will it leak in heavy rain?
The fabric itself is waterproof — silicone-coated on both sides. The seams are stitched with waterproof thread and zigzag construction, but not taped (silicone coating prevents tape adhesion). In sustained heavy rain, brand recommends applying silicone seam sealer to leak-prone seams. Same construction across both Types.
How many people can sleep inside?
Main alone: one person, cot oriented crosswise (the 220 cm width). Main + Extension: two people, cots end-to-end (220 × 240 cm covered floor). Main + 2× Extension: three cots, and the pattern continues. Width stays 220 cm — only the length grows per Extension.
Air shipping available for the Main Type?
Yes. Weight-based air surcharge shows at checkout — duties and customs covered, no surprise bills later. Five days versus the standard six-week ocean lead time.
When does the Black color come out?
Marketing photos show a Black variant, but Gopamir has not released it yet. Current available colors are Sand Brown and Dark Green only, on both Main and Extension Types. Black timing not yet announced.
BUILD THE FULL VESTIBULE SYSTEM
Pair with these.
The body it attaches to, the door that swaps in, and the body's own TPU upgrade.
SHIPPING
Shipping & timing.
Four ways to get it.
Express shipping
Air freight + ground
Recommended if you have a specific trip coming up and need it faster. Cost is calculated by package weight.
2-3 weeks
Standard shipping
Ocean freight + ground
Lower cost. Best when you're not in a rush. All duties included, no surprises at delivery.
5-8 weeks
Local pickup
BigTent Showroom, Coquitlam, BC
Pick up your order in person at BigTent Showroom, Coquitlam, BC — no shipping fee. In-stock orders are ready quickly; if an item is still inbound, we hold it for pickup and notify you as soon as the next shipment is received.
Within 2 business days when in stock
Local shipping
Ground
Ships from our BC warehouse, Canada — already in North America, so there's no overseas leg and no import wait. Orders within North America arrive with no added duties or customs fees. For destinations outside North America, the recipient is responsible for any duties or customs charges on arrival.
3–7 business days