For a full 60 × 60-inch corner, pick the Kohler Tercet K-1161 (96 gallons, center drain, room for two). For a smaller corner, pick the Carver SKC5555 soaker at 55 × 55 inches and 70 gallons. Both are non-jetted; plan the deck cutout, floor load and hot-water supply first.
Plumbing Picks is reader-supported. As an Amazon Associate, we earn from qualifying purchases at no extra cost to you.
This guide compares two non-jetted corner soaking tubs and what each needs before installation.
Corner tubs compared (maker sheets and drawings)
On a phone, swipe or scroll the table sideways to see every column.
| Tub | Size | Water | Drain / notes |
|---|---|---|---|
| Kohler Tercet K-1161 | 60 × 60 × 21 in.; 91 lb | 15 in. depth; 96 gal | Center drain; drop-in or corner alcove |
| Carver SKC5555 (soaker) | 55 × 55 × 18.5 in. | 70 gal | 53 × 53 in. deck cutout; set in mortar |
A corner tub fits diagonally into a corner, with the bathing well angled toward the room. It needs a square of floor space, 55 or 60 inches each way for these two, so it suits a larger bathroom more than a tight one. Both here are soaking tubs with no jets, so neither needs a motor or a dedicated circuit.
Kohler Tercet K-1161: 60 × 60 for two bathers
Choose the Kohler Tercet if you have a full 60 × 60-inch corner. The K-1161 spec sheet (resources.kohler.com) lists an acrylic bath sized for up to two bathers, with integral lumbar support and armrests, installed drop-in or as a corner alcove tub. Kohler lists a center drain, 15-inch water depth, 96-gallon capacity, 91 pounds empty and a 38-pound-per-square-foot minimum floor load.
Its drop-in cutout is angled, not a simple rectangle: Kohler’s drawing gives a corner-cutout detail with 57-1/2-inch and 27-1/2-inch edges and a 135-degree angled face. Build the deck to that detail, not to the tub’s overall size.
On October 15, 2026, the standard new offer from eFaucets showed limited stock with model 1161-0, White.
Check Kohler Tercet K-1161-0 60 x 60 corner bath (white) on Amazon →
Carver SKC5555: 55 × 55 for a smaller corner
Choose the Carver SKC5555 when 60 inches will not fit. Carver’s product page (carvertubs.com) calls it a popular choice for those who need a corner tub with limited space. Its spec sheet (carvertubs.com) lists 55 × 55 × 18.5 inches, acrylic, a slip-resistant floor, 70 gallons, a 53 × 53-inch deck cutout, 53 × 53 × 20-inch rough-in and a 20-inch finished deck height.
Two details matter before you order. Carver says the tub must be set in a 3-inch sand-mix mortar or concrete bed, and the overflow hole comes undrilled unless drilled on request. Plan both with your installer.
The linked listing is the soaking version; Carver also sells jetted versions of this shell, which need a 20-amp dedicated GFCI circuit per its sheet. On October 15, 2026, the standard new offer sold by Carver Bath Tubs showed stock with model SKC5555 (soaker).
Check Carver SKC5555 55 x 55 corner soaking tub on Amazon →
Measure the corner and the doorway
Measure both walls out from the corner and check that the corner is square. Corner tubs are large one-piece shells: also measure doorways, halls and stair turns on the way in, because a 55- or 60-inch tub has to fit through them.
Check the floor too. Kohler lists a 38-pound-per-square-foot minimum floor load for the Tercet, and a filled 70- to 96-gallon tub with a bather is heavy. If you are unsure about your framing, have it checked before installing.
Hot water for a big tub
Kohler’s sheet says the hot water supply should be 70 percent of the bath’s capacity or more. For the 96-gallon Tercet, that is about 67 gallons; for the 70-gallon Carver, about 49. Check what your water heater can deliver before you commit to a big soaker; our water heater size calculator helps you check yours.
Drain, overflow and faucet
Neither tub lists a drain as included. Kohler lists required drain trim or cable drain options for the Tercet; Carver offers its drain and overflow as a separate option. Our bathtub drain types guide explains drain styles, and our overflow gasket guide covers the overflow seal.
Corner tubs usually take a deck-mount faucet on the platform. Kohler warns that if you install a rim-mount faucet you should make sure there is no interference above or below the deck before drilling any holes. Our Roman tub faucet guide covers deck-mount fillers.
Access and installation
A drop-in deck closes in the drain, so plan an access panel; our access panel guide covers sizing. Follow each maker’s installation guide for supports and bedding; Carver publishes an installation manual (carvertubs.com) for its tubs.
Fill the tub and check the drain and overflow for leaks before the deck is closed or tiled.
Which one fits your bathroom
Start with the corner. If each wall gives you at least 60 inches plus room for the deck finish, the Tercet’s larger well and 96-gallon capacity are available to you. If you have closer to 55 inches, the Carver is the realistic choice; a 60-inch shell will not fit.
Then think about who uses it. Kohler sizes the Tercet for up to two bathers and lists integral armrests and lumbar support. Carver labels the SKC5555 a two-person bath on its sheet, but at 70 gallons it is the smaller soak of the two.
Finally, consider installation. The Carver’s required mortar bed and undrilled overflow add steps your installer must plan, while the Kohler lists either drop-in or corner-alcove installation with Kohler drain options.
Accessories Kohler lists for the Tercet
Kohler’s sheet lists required drain trim, either rotary-turn trim or a cable bath drain, plus recommended extras: a bath pillow (K-1491), a removable footstop (K-1601), cable bath drains and above-the-floor drain kits. If you want a pillow or footstop, order it with the tub so it arrives before the deck is finished.
For any corner tub, match the drain finish to your faucet and confirm the drain fits the tub’s drain and overflow openings before the plumber arrives.
Corner tub vs other tub types
Choose a corner tub for a large bathroom where you want a two-person soak in an unused corner. If your space is a standard three-wall alcove, see our alcove bathtub guide. For a rectangular tub on a deck, see our drop-in tub guide.
Frequently asked questions
What size is a corner bathtub?
These two are 60 × 60 inches (Kohler Tercet) and 55 × 55 inches (Carver SKC5555).
How many gallons does a corner tub hold?
Kohler lists 96 gallons for the Tercet and Carver lists 70 gallons for the SKC5555.
Do corner tubs need a deck?
These two are drop-in style. The Tercet can also be installed as a corner alcove tub; the Carver lists a 53 × 53-inch deck cutout and a 20-inch finished deck height.
Does a soaking corner tub need electricity?
Not the soaking versions here. Carver’s jetted versions need a 20-amp dedicated GFCI circuit, per its spec sheet.
Is the drain included?
No. Kohler lists required drain options separately, and Carver sells its drain and overflow separately.
How we chose
This document-based guide makes no hands-on testing claim. We read Kohler’s K-1161 spec sheet and inspected its drawing, and inspected Carver’s SKC5555 spec sheet and product page. On October 15, 2026, the Kohler offer from eFaucets showed limited stock and the Carver offer from Carver Bath Tubs showed stock. A Kingston 2-wall corner tub was excluded because Amazon showed it temporarily out of stock, and a PROFLO corner tub was excluded because we could not reach its maker documents. Read our selection method and about Plumbing Picks.
Primary sources
- Kohler Tercet K-1161 spec sheet (resources.kohler.com): 60x60x21, 2 bathers, center drain, 96 gal, 15 in., 91 lb, 38 lb/ft², angled cutout detail, 70% hot water note, rim-mount faucet note.
- Carver SKC5555 spec sheet (carvertubs.com): 55x55x18.5, 70 gal, 53×53 cutout, 20 in. deck, mortar bed, undrilled overflow, jetted electrical needs.
- Carver SKC5555 product page (carvertubs.com): limited-space corner tub; options; documents.
- Carver installation manual (carvertubs.com): maker installation guide.