Mobile vs Big4One: Walk-In Tub Comparison
The Ella Mobile and the Ella Big4One side by side, using the actual dimensions from the spec sheets and technical drawings rather than nominal sizes. The profiles cover therapy packages, videos and installation notes for each tub.
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| Door style | U-shape outward-swing door | U-shape outward-swing door |
| Door swing | Outward | Outward |
| Seats | One bather | One bather |
| Actual size (W x L x H) | 26" x 45" (brochure size) | 33 1/8" x 66" x 39.5" |
| Seat | 20" x 14 in. | 24" x 21 1/4 in. |
| Interior length | 38 7/8 in. | 58 in. |
| Seat to overflow (soaking depth) | 18 1/2 in. | 22 in. |
| Seat to footwell | 15 in. | 17 in. |
| Footwell | 18 W by 14 1/4 L | 20 W by 17 L |
| Net weight | not listed | 271 lb |
| Shipping weight | not listed | 400 lb |
| Crate size (W x L x H) | not listed | 36" x 68" x 49" |
| Water to overflow, unoccupied | not listed | 127 gal |
| Water with a bather (typical) | not listed | 75-100 gal |
What is different
- The Big4One is 7 1/8 in. wider than the Mobile (33 1/8 in. vs 26 in.).
- The Big4One is 21 in. longer than the Mobile (66 in. vs 45 in.).
- They share the same door design: u-shape outward-swing door.
Common questions
Which is bigger, the Mobile or the Big4One?
The Big4One has the larger footprint at 33 1/8" x 66" x 39.5", against 26" x 45" (brochure size) for the Mobile.
Do the Mobile and the Big4One have the same door?
Yes. Both use the u-shape outward-swing door, so the same operation, seal and latch guides apply to either tub.
Read the full profiles
Add a third model to this comparison → · Dimensions by model · Which door does my tub have?
Want help choosing?
Your Ella dealer or the team at (800) 480-6850 can walk you through both tubs for your space and needs.
Videos