Armadillo Horizon 3 Annex Room

23Zero Armadillo Horizon 3 Annex Room

The armadillo horizon 3 annex creates a fully enclosed, weather-protected living space beneath your rooftop tent for enhanced comfort and flexibility at camp.

Designed specifically for the Armadillo Horizon 3 rooftop tent, this annex expands your setup with a large sheltered area for changing clothes, housing pets or kennels, setting up a private toilet space, staging gear, handling meal prep, or adding additional sleeping space. The annex is not a standalone shelter and requires a compatible Horizon tent.

What’s Included

  • Annex with storage bag
  • Two (2) telescoping poles with pole storage bag
  • Two (2) pole weather caps
  • Two (2) guy lines with tensioners
  • Eight (8) stakes
  • Two (2) cinch straps

Key Features

  • Expanded Living Space: Adds 70 sq ft of enclosed area for privacy, shelter, and flexible camp use.
  • Multi-Use Functionality: Ideal for changing, pets, gear storage, toilets, meal prep, or additional sleeping space.
  • Multiple Access Points: Front, side, and rig-side doors improve movement and usability around camp.
  • Weather Protection: 8″ storm flaps and enclosed walls help block wind, moisture, and debris.
  • Ventilation and Coverage: Zippered flaps with bug netting balance airflow and protection.

Specifications

  • Added Living Area: 70 sq ft
  • Floor Size: 91” W x 116” L (extending from the rig)
  • Front Door: 55” W x 70” H
  • Side Doors: 45” W x 65” H
  • Rig-Side / Rear Door: 50” W x 64” H
  • Storm Flaps: 8” on external walls
  • Storage Size: 39” W x 11” L x 12” H (Bag Tag = L)
  • Packed Weight: 31 lb
  • Pole Range: 31.5” to 94.5”
  • Optimum Tent Mounting Height: 72” off the ground

Fitment

  • Designed specifically for 23Zero Armadillo Horizon 3 rooftop tents
  • Requires compatible Horizon tent for installation
  • Best performance when mounted at approximately 72” height

Setup & Usage Notes

  • Install rear keder track first, followed by side keders, then zip the annex top to the tent
  • Poles, guy lines, and stake-out points must be fully secured for proper performance
  • If mounted higher than recommended height, removing the floor may help prevent damage
  • If mounted lower, excess material may rest on the ground
  • Annex is not a standalone shelter

Storage Notes

  • Lay flat, fold lengthwise in thirds, insert poles, and roll tightly
  • Use included cinch straps for compact storage
  • If stored wet, air out later to prevent mold

Product Support

Need help with installation or setup? Download the Armadillo Horizon Annex User Manual, then check out our Vehicle Camping Guide for expert tips to make the most of your adventures.


Armadillo A2 & A3 Annex Plus

Spacious Living Area: With a ceiling height of 75 to 86” and approximately 70 square feet of living space, the annex extends your sheltered area significantly and serves a multitude of purposes, such as a cooking area, storm shelter, sunshade, kennel space, or private changing area.

Effortless Installation: Setting up the rooftop tent annex is a breeze. Simply zip the annex to the tent’s rain fly, slide it into the sail track (C-Channel), stake down the corners, deploy the telescoping poles, and secure the guy lines.

Multiple Entry Points: The annex features a rear door that allows convenient access to your vehicle. Additionally, it sports a generously sized front door and two side doors, all equipped with screens to facilitate optimal ventilation while keeping insects at bay. The weather flaps on its lower section can be easily weighted down to minimize drafts and help to ensure comfort in changing weather conditions.

Includes: Your purchase includes the annex itself, stakes, guy lines, a set of two telescoping poles, pole topper rain stoppers, handy stuff sacks, and a convenient storage bag.

Technical Specifications

A2

A3

Floor / Ground Coverage 88” (W) x 120” (D). Approx. 70 sq ft 88” (W) x 120” (D). Approx. 70 sq ft
Inside Height (depends on the ground) 72” to 86” H 72” to 86” H
Mounting Height. Depending on the ground.  75” H +/- 3” 75” H +/- 3”
Pole Length 30” to 91” 30” to 91”
Stored Weight 18.62 lbs 18.64 lbs
Stored 36” W x 9” L x 9” H 36” W x 9” L x 9” H
Door Size (U Shaped) 56” W x 65” H
Side Door Size 47” W x 65” H
Side Height 96” H
Side Bottom Width 116” W 119” W
Side Top Width 85” W 94” W
Front Bottom Width 83” W 92” W
Front Top Width 67” W
Front Height 74” H
Vehicle Access Door 46” W x 66” H 46” W x 66” H

Compatibility Notice*

  • The Armadillo A2/A3 Rooftop Tent Annex is ONLY compatible with the Armadillo A2 and Armadillo A3 Rooftop Tent.
  • The A2/A3 Annex is NOT compatible with the new Armadillo AX (AX2 + AX3) Series Rooftop Tents.
  • The A2/A3 Annex is NOT compatible with the new Armadillo Horizon (H2 + H3) Series Rooftop Tents. If you are looking for a Horizon-compatible solution, please see the Armadillo Horizon 2 Annex or Armadillo Horizon 3 Annex.

Some Recommendations

  • The Armadillo A2 / A3 Roof Top Tent Annex is not intended to be stored within the main tent while zipped to the rain fly or attached to the sail track.
  • Secure all four corners with stakes and attach guy lines to the two poles
  • Don’t store the annex while attached to the rain fly or sail track
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