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What Are Seat Width and Seat Height on a Walk-In Tub?

Updated September 2026

Seat width and seat height on a walk-in tub describe the molded seat you bathe on: how wide it is across the hips, and how high its surface sits above the tub floor. Ella seats range from 19 to 29 inches wide, and the seat height is roughly 17 inches on most models. The seat has to be wider than your seated hip measurement to be comfortable, which is why measuring yourself seated is the first step in choosing a tub.

Comparison chart of walk-in tub dimensions for the Elite, Petite, Royal, Deluxe and Ultimate including seat specs
Seat width is printed on every spec sheet and dimension chart.

How It Works

The seat is molded into the shell as one piece, so it cannot be moved or adjusted. Seat width is measured across the seat surface at hip level. Seat height is measured from the tub floor to the seat surface, and on most Ella models it is about 17 inches, within the 17 to 19 inch range used for accessible seating. That chair-like height makes sitting down and standing up feel natural. The Ultra's 17 inch seat is called ADA-compliant on its spec sheet.

If you would like to sit a little higher, a seat pillow riser adds a few inches on the models it fits. See Swivel tray, seat pillow riser and seat cushions for compatibility.

Which Ella Models Have It

Every Ella walk-in tub has a molded seat; what changes is the width. The narrowest seats are 19 inches on the Petite and Transfer26. The Big4One and Transfer32 offer 24 inch seats, the ShaK is 28 inches, and the widest single seat is the TransferXXL at 29 inches. Two-seat tubs list two widths, one per seat; the Escape, for example, has 27 and 29 inch seats. The Ultra carries the 17 inch ADA seat height. Every model's seat figures are in Walk-in tub dimensions by model.

What to Know as an Owner

Before you choose a tub, sit in a straight chair and measure your hips and shoulders at their widest, then your seated length from the top of your head to your feet. Compare those figures with the seat width, interior length and seat-to-overflow depth on the drawings for each tub you are considering. Seat sizes and soaking depth walks through the method, and Bariatric and large-bather options covers the widest seats.

Once installed, the seat needs the same care as the rest of the acrylic: approved non-abrasive cleaners only. If the seat feels too low after installation, the shell itself cannot be changed, but a seat riser or cushion may help. When you contact the team, have your model name, serial number and seated measurements ready.

Common Questions

How wide is the seat in an Ella walk-in tub?
Ella walk-in tub seat widths range from 19 to 29 inches. The narrowest seats are 19 inches on the Petite and Transfer26 models, while the Big4One and Transfer32 offer 24-inch seats. The ShaK has a 28-inch seat, and the widest single seat is 29 inches on the TransferXXL. Two-seat tubs, such as the Escape, list two widths, one for each seat.
How high is the seat, and is it ADA height?
The seat height on most Ella walk-in tub models is about 17 inches above the tub floor. This height falls within the 17 to 19 inch range used for accessible seating, which makes sitting down and standing up feel natural. The Ultra's 17-inch seat is specifically called ADA-compliant on its spec sheet.
Can the seat height or width be adjusted after installation?
No, the seat height or width cannot be adjusted after installation because the seat is molded into the tub shell as one piece. While the seat dimensions are fixed, a seat pillow riser can add a few inches of height on the models it fits. Seat cushions can also be used to add comfort.
How do I measure myself for the right seat width?
Sit in a chair and measure across your hips and across your shoulders at the widest points, then measure your seated length from head to feet. The seat must be wider than your seated hip measurement, and the other two figures help you check interior length and soaking depth.
Which Ella tub has the widest seat?
The TransferXXL walk-in tub has the widest single seat, measuring 29 inches. The Escape two-seat tub also offers a 29-inch seat on one of its two seats. Additionally, the ShaK model provides a wide single seat at 28 inches.

About this guide. Answers in the Ella’s Bubbles Support Center are compiled from real conversations with tub owners, our technicians’ notes and the product documentation, then reviewed by our team. Tub models and options have evolved over the years, so a detail here may differ slightly from your exact tub. If something looks different on yours, send us your serial number and a specialist will confirm it for your model.

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