Soaking depth in a walk-in tub is not one number. It comes from three measurements working together: 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. Ella's Bubbles publishes those measurements for every model on its comparison chart, and the tables below collect the interior dimensions and soaking depth by model so you can compare families side by side. Where a marketing video rounds a figure, the spec sheet and this chart govern.

How Soaking Depth Is Measured

The clip states the rule that appears in every Ella product video. The overall soaking depth of an Ella walk-in tub is determined by three factors: one, the interior length of the tub; two, the length of the seat; and three, the depth from the top of the seat to the center of the overflow drains. A bather's own size then decides the actual result, so keep the three factors in mind as you choose a tub. For the companion guide on measuring your own hips, shoulders and seated length, see seat sizes and soaking depth.

Reading the Columns

• Interior length is the usable length inside the shell from the backrest to the far wall; a longer interior lets your legs extend.
• Seat length is how far the seat projects forward; a longer seat supports more thigh but takes up interior length.
• Seat to overflow top is how deep the water can rise above the seat. Water cannot be filled above the overflow, so this is the practical soaking depth for the torso.
• Seat to footwell is the drop from the seat surface to the floor, which sets how far your feet sit below the seat.

Stainless Steel Inward-Door Family

U-Shape Outward-Door Family

L-Shape Wheelchair Transfer Family

Two-Seat Family

On two-seat tubs the interior length is shared between the two facing seats, so each bather's leg room is roughly the interior length less the other seat's length. The chart's 37 3/8 inch entry for the Big4Two appears to describe the space in front of one seat rather than the full 80 inch tub; confirm with the drawings in the Big4Two specifications before planning around it. Our two-seat tub comparison looks at how the four models share their space.

Models Not on the Chart: Standard Family and Ultra

These four are not on the comparison chart, so their figures come from product videos and spec sheets: Standard, 43 inch interior, 22 by 18 inch seat, 15 inch soaking depth; Flow, 38 inch interior, 20 by 13 inch seat; Zen, 20 by 15 inch seat; Ultra, 42 inch interior, 19 inch seat length, 17.5 inch soaking depth. Ask the team for the Zen interior lengths in writing if you need them.

The Ultra video states the 42 inch interior, 24 inch shoulder width, 17 inch seat height, 19 inch seat length and 17.5 inch soaking depth, and shows the reversible extension panel.

Putting It Together

A tall bather wants the longest interior with a moderate seat length, which points to the Ultimate, Lounger, Transfer60, Big4One or Shak. A bather who wants the deepest water over the torso should look at seat-to-overflow: the Big4One at 22 inches, the Transfer32 at 19 3/4 inches, the Transfer60 at 19 5/8 inches and the Deluxe at 19 inches lead the single-seat families. A petite bather may prefer a shorter interior so the feet reach the footwell wall, which is where the Petite, Transfer26 and Front Entry sit. Nominal sizes on this chart are marketing roundings; the actual size on each spec sheet is the figure to measure the room against, and the spec sheets and drawings by model article shows where to download them. The backrest recline angles article adds the other comfort factor, how far each seat leans back.

Common Questions

For anything specific to your model or your order, open a ticket at ellasbubbles.com/support or call (800) 480-6850.