Ella walk-in tubs are seated soaking tubs, so every backrest is closer to upright than a recliner, with a gentle lean built into the shell. The spec drawings print a backrest angle for four models: the Ultra at 88 degrees, the Flow at 96 degrees, and the Monaco and Mobile at 101 degrees. In that scale 90 degrees is straight up, so a bigger number means more lean. Most other spec sheets do not print an angle, and the team can read the drawing for any specific model if you need it. Below are the published figures, what owners have been told about seating comfort on particular models, and the things you can change to make the seat feel right for you.
Backrest Angles Printed on the Drawings
- Ultra: 88 degrees. The Ultra's backrest is very slightly forward of vertical, which pairs with the 17 inch seat height and 19 inch seat length called out in its product video to keep you upright and supported.
- Flow 28x48: 96 degrees, a mild lean in the smallest inward-door tub.
- Monaco 32x52: 101 degrees, the most reclined figure printed on a current drawing.
- Mobile 26x45: 101 degrees, the same lean as the Monaco in a much smaller footprint.
Every other spec sheet leaves the angle off the drawing. If you are deciding between two models and want the number, ask your Ella dealer or the team at (800) 480-6850 to read it from the CAD drawing rather than estimating from a photo.
How to Read the Number
Think of the seat as the floor of a protractor. A 90 degree backrest is straight up and down. Anything above 90 leans back, so 96 degrees is a little more relaxed than 88, and 101 degrees is the most reclined of the four. None of these angles are anywhere near a lounge chair. Walk-in tubs keep you seated with your feet in the footwell, and the water does the relaxing. If lying down is what you are after, the LayDown 30x60 and 32x72 are the models built for it.
What the Team Has Said About Specific Models
These notes come from support conversations rather than a printed drawing, so treat them as descriptions of how the seat feels, not as specifications.
- TransferXXL: the backrest is only slightly reclined, roughly 10 to 15 degrees off vertical by the team's reading of the drawing: not straight up and down, but much less leaned back than the pictures of other tubs suggest, which suits bathers who want an upright seat.
- LayDown: the sides look straight, but the shell has a slight curve at the back for support, and the team recommends adding the seat pillow for extra comfort.
- Big4One 33x66: described by the team as the most comfortable seating position in the line, which is why it comes up so often for taller and broader bathers who find smaller seats upright and snug.
Comfort Levers You Control
You cannot change the angle molded into the shell, but you can change how it feels.
- Headrest pillows and seat risers: a headrest pillow softens the top of the backrest, and a seat pillow riser lifts you a little for a deeper feel of support. Which tubs take which accessories is covered in swivel tray, seat pillow riser and seat cushions.
- Heated seat and backrest: the optional radiant heater pads warm the seat and back while the tub fills, which makes an upright seat feel far more relaxed.
- Soaking depth: how far the water comes up your body depends on the distance from the top of the seat to the overflow, not the backrest angle. The full table is in interior length, seat-to-overflow and seat-to-footwell by model.
Seat Heights
Seat height is the other half of the comfort question. About 17 inches is the highest seat in the line, and it is the seat-to-footwell figure on most outward-door, Transfer and two-seat models and the height the Ultra's product video describes as ADA compliant. The stainless-door family (Elite, Petite, Royal, Deluxe and Ultimate), the Mobile and the Escape sit lower at about 15 inches, and the Front Entry at 16. There is no adjustable-height seat. The comparison chart's seat-to-footwell column, collected in the interior dimensions article above, gives the figure for every model. For step-in heights at the door, see step-in threshold heights by model.
See the Ultra Seat and How Depth Is Measured

Chapters in this video
- 0:00 Introducing The Ella Ultra Tub The Ella Ultra walk-in tub is introduced, highlighting its durable acrylic, low-threshold entry, and slip-resistant floor.
- 0:31 Spacious Interior And ADA Features The unique design enhances interior space, providing ample room for bathing comfort with ADA-compliant seat height and length.
- 1:12 Innovative Jetting And Foot Massage The tub features three-speed air massage with auto purge, luxurious hydromassage with an inline heater, and an optional independent foot massage.
- 2:06 Fast Fill, Dual Drain, And Controls The Ultra includes a five-piece fast-fill faucet, Ella's exclusive dual drain technology, and a choice of digital or easy-touch controls.
- 2:29 Luxury Features And Accessories Optional features like LED chromatherapy, a heated seat and backrest, a four-fold glass screen, and a rain head shower column are available.
- 3:00 Magnetic Access Panels The tub is equipped with magnetic access panels for convenient servicing and maintenance.
The Ultra tour shows the seat that carries the 88 degree backrest: a 17 inch seat height, a 19 inch seat length for leg support, 42 inches of interior length and 24 inches of shoulder width, with the seat height and seat depth giving a 17 1/2 inch soaking depth. Watch how upright the bather sits and you will have a good mental picture of what an 88 degree backrest feels like. Watch: The Ella Ultra: Walk-In Tub With Ultra-Luxury Features with chapters and a full transcript.

This short clip explains that soaking depth comes from three things: the interior length of the tub, the length of the seat, and the distance from the top of the seat to the center of the overflow. A more reclined backrest does not add water depth, so if a deep soak is the goal, compare the seat-to-overflow figures rather than the angles. Watch: How to Measure the Soaking Depth of Your Walk-In Tub with a full transcript.
Related Guides
Common Questions
Is the back more straight up and down or reclined?
Which tub has the most reclined seat?
Does the backrest on the TransferXXL recline at all?
Does the LayDown have any back support?
Which model is the most comfortable to sit in?
Can I get a tub with a different backrest angle?
Is there a seat higher or lower than 17 inches?
Why does my spec sheet not show a backrest angle?
Want the backrest angle or seat measurements for a model that is not listed here? Ask through ellasbubbles.com/support with the model name, or call (800) 480-6850, and the team will pull the drawing for you.