Doubles the living area.
Adds 380 × 250 cm of stand-up floor to the existing T-250 footprint — 9.5 m² more cabin, 225 cm peak ceiling.
BRAND:
Kazmi
Kazmi AON T-250 Vestibule
SHIPS FROM KOREA · Cut-off today
Reserve today to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
. Free local shipping on orders over USD $300
Reserve today to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
. Free local shipping on orders over USD $300
Compatible add-ons curated to pair withKazmi AON T-250 Vestibule.
Be sure to select the right options.
Kazmi AON T-250 Vestibule
Precio de oferta$635.00 USD
SHIPS FROM KOREA · Cut-off today
Reserve today to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
. Free local shipping on orders over USD $300
Reserve today to make our June 30 vessel
Ready for pickup / ship-out from late July
Korea-direct · duty-free · full manufacturer warranty
. Free local shipping on orders over USD $300
WHAT IT ADDS
Four ways the vestibule changes the T-250.
Air-beam plus ridge poles.
TPU air-beam inflates in one valve cycle; three internal steel ridge poles ⌀ 19 mm reinforce the ceiling for added rigidity.
Side walls flip up.
On sunny days the side panels prop up as awnings — converting the vestibule into a screen room with shade extending outward.
Accepts the TPU window.
Front-door zipper accepts the T-250 Vestibule TPU Window (Smog) — swap the fabric door for a daylight panel without re-pitching.
HOW IT FITS THE T-250 LINE
Same standards. Different job.
Designed to share components and dimensions with the T-250 Air Shelter.
FOOTPRINT MATCH
Footprint matches the shelter.
Both modules are 380 × 250 cm. Setting up the vestibule in front means the combined cabin runs 760 cm / 24.9 ft front to back — no narrowing, no leftover dead space.
BUILD MATCH
Same fabric, same waterproof.
Both use 75D ripstop polyester with 3,000 mm hydrostatic head and 10 cm / 3.9 in TPU air-beams — vestibule weather performance matches the shelter so the seam between them isn't a weak link.
SPECIFICATIONS
Detailed specifications
Connects to the shelter via the standard front/rear zipper.
FLOOR ADDED
380 × 250 cm
149.6 × 98.4 in
PEAK HEIGHT
225 cm
88.6 in
WEIGHT
13 kg
28.7 lb
FRAME
TPU air-beam + 3 steel ridge poles
hybrid structure
Specifications
- BRAND
- KZM
- SERIES
- AON (Air + ON)
- PITCHED L × W × H
- 380 × 250 × 225 cm / 149.6 × 98.4 × 88.6 in
- FLOOR AREA ADDED
- 9.5 m² / 102.3 ft² (same footprint as T-250 Air Shelter)
- PACKED L × W × H
- 70 × 27 × 27 cm / 27.6 × 10.6 × 10.6 in
- TOTAL WEIGHT
- 13 kg / 28.7 lb (body + poles 11.5 kg + pegs/ropes 1.5 kg)
- COLOR
- Charcoal (matches T-250 Air Shelter)
- BODY FABRIC
- 100 % polyester taffeta 75D ripstop · silicone + PU coating · DWR + UV-protective coating
- BODY HYDROSTATIC HEAD
- 3,000 mm
- AIR TUBES
- Thermoplastic polyurethane (TPU) · ⌀ 10 cm / 3.9 in
- INTERNAL POLES
- 3 × steel ridge poles ⌀ 19 mm
- ZIPPER
- YKK®
- INFLATION
- Included hand pump · also accepts the T-250 Air Shelter built-in AIRON pump
- COMPATIBLE WITH
- Kazmi AON T-250 Air Shelter (K251T3T28) — connects via front or rear zipper. Accepts the T-250 Vestibule TPU Window (Smog) panel (K251T3T29).
- WARRANTY
- 1-year manufacturer warranty against material and workmanship defects
Compatibility
- Kazmi AON T-250 Air Shelter Connects to the T-250 Air Shelter front or rear zipper. Same 380 × 250 cm footprint, same fabric and waterproof spec — seam between the two doesn't introduce a weak link.
- Kazmi AON T-250 Vestibule TPU Window (Smog) Front-door open zipper accepts the Smog TPU panel — replace the fabric door with the tinted window for daylight access without losing privacy.
The hand pump included with this vestibule inflates it on its own. If you also own the T-250 Air Shelter, its built-in AIRON electric pump handles the vestibule via the same Safelock valve standard.
WHAT'S IN THE BOX
Everything included.
Included
- Vestibule body × 1 (380 × 250 × 225 cm with integrated TPU air-beam frame)
- Internal steel ridge poles × 3 (⌀ 19 mm)
- Mesh pouch × 1
- Steel pegs × 12
- Guy ropes × 8 (110 cm × 2 + 140 cm × 2 + 170 cm × 2 + 300 cm × 2)
- Hand pump × 1
- Carry bag × 1 (70 × 27 × 27 cm)
Not included
- Kazmi AON T-250 Air Shelter (required for connection)
- Kazmi AON T-250 Vestibule TPU Window — Smog (optional upgrade)
FREQUENTLY ASKED
Questions, answered.
Do I need the T-250 Air Shelter to use this?
Yes — this vestibule is a modular extension. It connects to the T-250 Air Shelter (K251T3T28) via the front or rear zipper. It does not stand alone as a tent on its own.
How does it connect to the shelter?
The vestibule's mating side has the same open-zipper standard as the T-250 shelter front and rear. Line up the zipper, run it closed, secure the storm-guard straps, and the two modules are joined.
Does it come with its own pump?
Yes — a manual hand pump is included. If you already own the T-250 Air Shelter, its built-in AIRON electric pump also inflates the vestibule via the same Safelock valve standard.
How long does setup take?
After inflating with the hand pump or AIRON, the air-beam frame goes up in about 5 minutes. Add another 5-10 minutes for the three internal ridge poles, pegs, and guy ropes. Total typically 10-15 minutes.
How waterproof is it?
Body fabric is 75D ripstop polyester rated to 3,000 mm hydrostatic head — same spec as the T-250 Air Shelter body. Seam between the two modules is sealed by the connecting zipper and storm-guard straps.
What is the side-flip-up panel for?
The side wall panels lift up and prop open as awnings. Useful when you want shade extending outward, or when running the vestibule as an open screen room on calm days.
Can I add the TPU window?
Yes — the front-door zipper accepts the T-250 Vestibule TPU Window (Smog) panel (K251T3T29). Swap the fabric door for the smog-tinted window when you want daylight without privacy loss.
What's the warranty?
BigTent imports directly and covers a 1-year manufacturer warranty for material and workmanship defects.
FROM THE CURATOR
Why we carry it.
"The vestibule is the piece that turns the T-250 from a great 4-person shelter into a small base camp. Same footprint as the shelter, same fabric, same waterproof rating — once it's up the combined cabin runs almost 25 feet front to back without a narrow connecting tube. The flip-up sides are the part that surprised us: on a clear day you basically have a screen room with a fixed roof. Buyers who add this almost always come back for the TPU window too, because once you've doubled the room, daylight in the second zone changes the whole feel."
Kevin G.·Founder · BigTent Outdoors
BUILD THE T-250 SETUP
Pair with these.
SHIPPING
Shipping & timing.
Three 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 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