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Zpacks Duplex Classic


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This ultralight tent will allow you to push your limits and hike greater distances; whether losing yourself in the beauty of the Pacific Crest Trail, or weathering an afternoon storm in the Swiss Alps.

Specifically designed for the demands of long distance backpacking, the award-winning Duplex hits the sweet spot when it comes to size, weight, and features.

The Duplex is lightweight, roomy, well-ventilated, packs down small, pitches easily, and can be set up in the tightest of spaces. You won’t find a lighter functional two person tent anywhere on the market.

Voted the most popular ultralight tent by Appalachian Trail thru-hikers two years in a row.

Weight: 507g

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  • Sets up with two trekking poles adjusted to around 48″ (122 cm). Slightly taller or shorter fixed length poles will also work. If you do not use trekking poles, we have straight tent poles available.
  • Six stakes are required for this tent with eight stakes recommended for a taught pitch in windy conditions. Stakes are not included but we have a variety of Ultralight Stakes to choose from.
  • A smaller 53” x 100” (135 x 254 cm) corner to corner footprint allows you to squeeze into those hard to find backcountry flat spots, providing a decisive advantage over asymmetrical designs with larger footprints that require much more space to set up.
  • Symmetrical design allows two adults to lay side by side in either direction, creating a superior sleeping experience for couples when compared to asymmetrical offset pole designs. The symmetrical pole design also avoids the steep wall angles found in asymmetrical tents, creating more practical usable space, allowing two people to sit upright side by side facing out either door while removing shoes or while reaching out to cook or access gear just outside the tent.
  • The symmetrical design also allows any of the four storm doors to be opened or closed independently, providing best in class views and ventilation. Leave all four open on nice weather nights for a breeze and great views. Close the upwind doors to block cold wind, or close all four for 360° rain protection. The overlapping doors are closed with custom made metal hooks, with a toggle at the center to keep them pinned.
  • Overlapping storm doors allow for a small amount of airflow without the need for additional venting. There are no zippers on the doors that could potentially fail over time.
  • Each screen door has a rainbow zipper which allows easy entry regardless of which storm doors are closed, and they give you access to every vestibule area. Each screen door conveniently drops inwards rather than hanging in your way. No need to roll it up or secure it.
  • The tarp overhangs the bathtub floor by 4-5 inches (12 cm). In calm rain or under wet trees one or two doors can be left open for air flow without water dripping on the floor space. In almost all conditions at least one downwind door can be left open for air.
  • Stick on Magnet Toggles are also available for those looking to upgrade their storm door closing mechanism.
  • For even better rain protection with a door open, use the included elastic cords to pull the screen door back away from the rain spray as seen in the photo gallery.
  • This tent has a solid, sewn in 8 inch (20 cm) tall bathtub floor. The bathtub floor is a rectangle 45 inches wide by 7.5 feet long (114cm x 2.3m). Plenty of space for two average people to stretch out plus space for gear at the ends of the floor.
  • If you are particularly tall, you might try propping up the side guylines with Trekking Pole Cups.
  • Mesh pockets are conveniently located near each screen door so that they can be accessed from inside or outside the tent. They are a good place to store your cell phone, glasses, headlamp, the tent stuff sack, and spare seam tape (included). The pockets are about 8″ x 8″ (20 cm x 20 cm).
  • A separate groundsheet is NOT required for this shelter. The floor material is reasonably durable, and all Dyneema® Composite Fabric gear can be easily patched in the field with repair tape. If you do prefer to use a groundsheet as a precaution, Flat Groundsheets are available.
  • There is screen between the bathtub floor and the walls at the ends of the tarp. An elastic cord keeps the bathtub elevated ensuring the screen slopes downwards away from the bathtub. Any condensation, which single wall shelters may experience, will run down the walls and out through the downward sloping screen, rather than onto the floor.
  • All of our tents do pretty well in the wind. The material can handle high wind loads. As long as your stakes stay in the ground (use rocks if available) your tent will stay standing. Dyneema® Composite Fabric is not a particularly noisy fabric; however, almost any tent will make a little noise in the wind. Earplugs are not a bad idea for windy nights.
  • Dyneema Composite Fabric is naturally waterproof and is not treated with any potentially harmful chemicals such as flame retardants or water repellents.
  • All Zpacks gear has a two year limited warranty against defects in materials or workmanship. Please see our return / warranty policy.
  • Made in the USA.


507g: the weight of the tent including guy lines, sewn in linelocs, and taped seams. Your choice of canopy fabric affects the weight shown.

The following items are also shipped with this tent:

  • Medium-Plus DCF Stuff Sack – ~.32 oz (9 g)
  • 54″ DCF repair tape strip – ~.14 oz (4 g)
  • Two spare zipper sliders – ~.16 oz (4.5 g)
  • Total additional items: ~.62 oz (17.5 g)
  • 8x Stakes are required but are not included. We have a variety of Ultralight Stakes to choose from.

Exterior Dimensions:

Peak height: 48″ (122 cm)

Ridgeline width: 53″ (135 cm)

Width including vestibules: 93″ (236 cm)

Vestibule Depth from floor: 24″ (61 cm) each side

Length: 100″ (254 cm)

Interior Dimensions:

Peak height: 48″ (122 cm)

Floor width: 45″ (114 cm)

Floor length: 7.5 feet (2.3 meters)

Floor Area: 28.1 square feet (2.6 square meters)

Zipper entry height: 36″ (91 cm)

Packed Dimensions:

Packed Size: 6″ diameter by 12″ tall (15 cm x 30 cm),  340 cubic inches (5.6L).

Stuff Sack Size: 7″ diameter by 13″ tall (18 cm x 33 cm) Medium-Plus. The intentionally loose stuff sack makes packing easy and it will squish down in your backpack.


  • Fly fabric: 0.55oz/sq yd Dyneema® Composite Fabric
  • Floor fabric: 01.0oz/sq yd Dyneema® Composite Fabric
  • Mesh: 0.67oz/sq yd Ultralight Nano-Noseeum Insect Netting

Additional information


Olive Drab, Blue


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