TentCheck

Zpacks Triplex Pro

Floor 84 × 65 in, 48 in peak, vestibules 7.7 sq ft + 7.7 sq ft. Drawn to scale from the maker's listing; the grid is 6 in.

Which pads fit

3 regular padsFits

An inch or more to every wall. Sit-up room +9.2 in.

3 wide padsDoesn't fit

They don't fit side by side: 3.5 in past the wall.

3 mummy padsFits

An inch or more to every wall. Sit-up room +9.2 in.

Pads side by side at their listed sizes, with the average man (5 ft 9 in) lying on each. "Tight" is under an inch to a wall or the sloping roof: the fabric gives, but a wet wall wets what touches it. Open it in TentCheck to try your own pads, cots and gear, or read how fits are checked.

Where 3 wide pads fit instead

The lightest 3-person backpacking tents where they fit with an inch to every wall.

Headroom

Roof overheadFloorShare
Anywhere37.9 sq ft100%
12 in or more30.4 sq ft80%
24 in or more21.7 sq ft57%
36 in or more11.3 sq ft30%

From the modeled roof, not measured. About 36 in is where an average adult sits up straight on a pad: a 35 in sitting height, plus the pad.

The numbers

Floor (listed)84 × 65 in, 37.9 sq ft
Peak48 in (4 ft)
Vestibules7.7 sq ft + 7.7 sq ft
Sleeps (maker)3
Packed weight21.7 oz (1 lb 5.7 oz)
Packed volume5.6 L
Regular pads that fit3 with an inch to every wall
Sit-up room on a pad, at the peak+12 in for 35 in sitting height
Pitched footprint96 × 108 in (8 ft × 9 ft), floor and vestibules
Groundsheet to cutAbout 82 × 63 in

On the campsite

Floor and vestibules together cover 96 × 108 in. On a square tent pad, as campgrounds list them: 8 × 8 ft: doesn't fit; 10 × 10 ft: fits; 12 × 12 ft: fits. Guylines and stakes need more room around that.

For a groundsheet, cut it a little smaller than the floor, about 2 in, so rain running off the fly doesn't collect on it and run under the tent: about 82 × 63 in.

Notes

Floor 84 × 65 in, 48 in peak, single wall on two trekking poles. Zpacks lists each vestibule 21.5 in deep but no area; 7.7 ft² is the beak as drawn from its listed dimensions.

Sources

Roof shapes are modeled from the floor, the peak and how the poles hold the walls, not measured. Treat a result within an inch or two as too close to call.