TentCheck

Big Agnes Tiger Wall UL1

Floor 86 × 38/28 in, 39 in peak, vestibules 8 sq ft. Drawn to scale from the maker's listing; the grid is 6 in.

Which pads fit

A regular padFits

An inch or more to every wall. Sit-up room +3 in.

A wide padFits

An inch or more to every wall. Sit-up room +3 in.

A long wide padFits

An inch or more to every wall. Sit-up room +3 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.

Headroom

Roof overheadFloorShare
Anywhere19.7 sq ft100%
12 in or more18.1 sq ft92%
24 in or more13.1 sq ft67%
36 in or more3.9 sq ft20%

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)86 × 38/28 in, 19.7 sq ft
Peak39 in (3 ft 3 in)
Vestibules8 sq ft
Sleeps (maker)1
Packed weight34 oz (2 lb 2 oz)
Packed volume6.6 L
Regular pads that fit1 with an inch to every wall
Sit-up room on a pad, at the peak+3 in for 35 in sitting height
Pitched footprint86 × 61.1 in (7 ft 2 in × 5 ft 1 in), floor and vestibules
Groundsheet to cutAbout 84 × 36/26 in

On the campsite

Floor and vestibules together cover 86 × 61.1 in. On a square tent pad, as campgrounds list them: 8 × 8 ft: fits; 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 84 × 36/26 in.

Notes

Floor 86 × 38/28 in, 39 in peak (REI; see the open question), one side door with an 8 ft² vestibule. Semi-freestanding: the foot corners need stakes.

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.