Tub4Two vs Big4Two: Walk-In Tub Comparison
The Ella Tub4Two and the Ella Big4Two 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 | Two bathers | Two bathers |
| Actual size (W x L x H) | 32" x 60" x 40" | 36" x 80" x 40" |
| Seat | 20" and 22" | 22" and 24" |
| Interior length | 56 3/4 in. | 37 3/8 in. (chart) |
| Seat to overflow (soaking depth) | 15 3/4 in. | 19 1/4 in. |
| Seat to footwell | 17 in. | 17 in. |
| Net weight | 230 lb | 328 lb |
| Shipping weight | 325 lb | 531 lb |
| Crate size (W x L x H) | 34" x 62" x 50" | 38" x 82" x 50" |
| Water to overflow, unoccupied | 100 gal | 145 gal |
| Water with a bather (typical) | 65-85 gal | 85-135 gal |
What is different
- The Big4Two is 4 in. wider than the Tub4Two (36 in. vs 32 in.).
- The Big4Two is 20 in. longer than the Tub4Two (80 in. vs 60 in.).
- Both are 40 in. tall.
- They share the same door design: u-shape outward-swing door.
- To the overflow, the Tub4Two holds about 100 gallons and the Big4Two about 145, which matters for water heater sizing.
- Net weights are 230 lb (Tub4Two) and 328 lb (Big4Two).
Common questions
Which is bigger, the Tub4Two or the Big4Two?
The Big4Two has the larger footprint at 36" x 80" x 40", against 32" x 60" x 40" for the Tub4Two.
Do the Tub4Two and the Big4Two 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.
How much water do the Tub4Two and the Big4Two hold?
To the overflow when empty, the Tub4Two holds about 100 gallons and the Big4Two about 145 gallons; with a bather the typical ranges are 65-85 and 85-135 gallons. Size your water heater to the larger figure.
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