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TOTO Guinevere

Guinevere is the period-styled toilet in TOTO's lineup — sculpted, fully skirted, and drawn from a bathroom line TOTO describes as reflecting "luxury and romance." Bidets USA carries it as two WASHLET+ sets, one with the S2 bidet seat and one with the S5, both elongated and both 1.28 GPF.

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Why the TOTO Guinevere Looks Different from Every Other TOTO One-Piece

The Guinevere looks different because it is styled as a period fixture rather than a modern one — sculpted curves and decorative base molding where TOTO's contemporary lines use flat planes and hard edges. TOTO's own description of the collection is that its "classic, timeless design ... reflects luxury and romance." That is the whole reason to buy this toilet over a cheaper TOTO with identical internals.

Underneath the styling it is standard TOTO. Both sets in this collection sit on bowl model CST974CEFGAT40, the same ceramic as the toilet-only Guinevere, MS974224CEFG. TOTO lists it as a TORNADO FLUSH system at 1.28 GPF (4.8 LPF), elongated front bowl, Universal Height, skirted, with CEFIONTECT ceramic glaze, a chrome plated trip lever, and WaterSense, ADA and CALGreen compliance. TORNADO FLUSH uses two nozzles to create a centrifugal, cyclonic rinsing action rather than rim holes; CEFIONTECT is a glaze that minimizes waste sticking to the porous ceramic surface. Both are shared across most of TOTO's current 1.28 GPF toilets.

Skirted, and what the skirt is doing for you

Skirted means the trapway is enclosed behind a smooth continuous side wall instead of the molded S-curve that bulges out of a conventional bowl. That curve is where most of the scrubbing time goes on an ordinary toilet, and on the Guinevere there is nothing there to scrub. Combine that with one-piece construction — no tank-to-bowl joint, no gap to collect dust — and the decorative styling costs you nothing in cleaning. It is the same argument behind every one-piece toilet versus a two-piece, just applied to a fixture that happens to look ornate.

The Guinevere is part of a matching bathroom suite

Guinevere is a full TOTO line, not a single toilet: TOTO builds Guinevere pedestal lavatories (LPT970 and LPT972) with the same detailing, alongside the SS224 SoftClose seat for the toilet-only version. That matters if you are doing a whole room rather than swapping a fixture — the toilet and the sink read as a set instead of two pieces that happen to share a color. This collection covers the toilets; the lavatories come from TOTO directly.

Guinevere or Soirée

Pick the Guinevere for traditional detailing and the Soirée for a softer contemporary shape — both are skirted 1.28 GPF one-piece TOTO toilets, and the difference is entirely the silhouette. TOTO describes the Soirée as "clean lines and robust curves." If you want no ornament at all, TOTO's flat-sided skirted one-pieces are the other direction again: see the Carlyle II or the Redington, both of which offer the same TORNADO FLUSH and CEFIONTECT in a plainer body.

How to Choose Your TOTO Guinevere

Choosing a Guinevere comes down to two decisions: which WASHLET+ seat you want on top, and whether your bathroom's rough-in, outlet and clearances suit the set. Bowl shape and seat height are not variables here — every Guinevere is elongated and every one is Universal Height, so there is nothing to get wrong on either count.

S2 or S5: which WASHLET+ seat

Choose the S5 if you want a remote, and the S2 if a control panel on the side of the seat suits you better — that is the real difference between the two Guinevere sets sold here. The S2 (MW9743346CEFG) uses an attached arm control panel. The S5 (MW9743446CEFG) uses a slim wireless remote with an illuminated touchpad, which most people mount on the wall within reach of the seat.

Everything else is shared. TOTO's WASHLET comparison lists the same core set on both: instantaneous water heating, so the warm wash does not run out mid-use; a heated seat with three temperature settings; a warm air dryer with three settings; an air purifier (deodorizer); a night light; rear, soft rear, front, oscillating and pulsating cleanse; plus PREMIST and EWATER+. Neither the S2 nor the S5 has the wide front cleanse, the auto open and close lid, or auto flush — those sit on the S7 and S7A. If a lid that opens as you approach is the feature you actually want, look at the WASHLET S7A sets on other TOTO lines instead.

Does the TOTO Guinevere fit a 10-inch or 14-inch rough-in?

The Guinevere fits a 10-inch or 14-inch rough-in using TOTO's TSU01W adapter, sold separately; without it the set is a 12-inch rough-in toilet. Measure before you order: from the finished wall behind the toilet — not the baseboard — to the center of the bolt caps at the base. Twelve inches is the standard case, but older houses and remodels turn up 10 and 14 often enough that it is worth the two minutes. The adapter has to go on during installation, so decide before the plumber arrives, not after.

What the bathroom needs before installation day

A Guinevere WASHLET+ set needs a GFCI 120V outlet within three feet of the toilet, a standard 1/2-inch water supply connection, 21 inches of clear floor in front of the bowl and 15 inches to each side. The outlet is the one that catches people out — plenty of bathrooms have no receptacle behind the toilet at all, and adding one is an electrician's job. If yours does not have one and you would rather not run power, the fix is a different product, not a different TOTO: a non-electric seat on a plain TOTO one-piece toilet.

Frequently Asked Questions about TOTO Guinevere

What are the downsides of a period-styled skirted one-piece like the Guinevere?

The downsides of a period-styled skirted one-piece like the Guinevere are commitment and configuration. The sculpted molding and decorative base only read right in a traditional bathroom, and TOTO builds no plainer version of this bowl. Both WASHLET+ sets here are Cotton and elongated only, and a 10-inch or 14-inch rough-in needs TOTO's TSU01W adapter, bought separately and fitted during installation.

If the WASHLET fails, can you keep the Guinevere's CST974CEFGAT40 bowl?

Yes — if the WASHLET fails you can keep the Guinevere's CST974CEFGAT40 bowl. Both sets in this collection, MW9743346CEFG with the S2 and MW9743446CEFG with the S5, sit on that one skirted ceramic, and only the seat on top differs. Bidets USA puts a durable smart toilet at 10 to 15 years or more with proper maintenance, and it is the electronics that figure describes.

Does choosing the S2 or the S5 change how high the Guinevere sits?

Choosing the S2 or the S5 does not change how high the Guinevere sits. Both sets are built on the same CST974CEFGAT40 bowl, which TOTO lists at Universal Height and ADA compliant, and TOTO builds no standard-height version of this line. If a taller seat is what you are after, the store's other tall toilets are worth comparing.

The Guinevere line runs to pedestal lavatories — does it run to a round bowl too?

The Guinevere line does not run to a round bowl. TOTO extends it sideways into the LPT970 and LPT972 pedestal lavatories and the SS224 seat, but builds one bowl only: elongated, skirted and one-piece. A set here also wants 21 inches of clear floor in front of it, so if your bathroom cannot spare that depth, shop round toilets instead.

Why are both Guinevere WASHLET+ sets Cotton when the toilet comes in five colors?

Both Guinevere WASHLET+ sets are Cotton because TOTO produces the WASHLET in a narrower color range than the ceramic. The toilet on its own, MS974224CEFG, is listed in Cotton, Bone, Colonial White, Sedona Beige and Ebony, and the SS224 SoftClose seat matches all five. For Sedona Beige or Ebony you order that toilet-only model, not a set from this collection.

Do both Guinevere WASHLET+ sets hide the power cord behind the skirt?

Both Guinevere WASHLET+ sets hide the power cord behind the skirt. WASHLET+ routes the cord and the water supply hose behind the skirted CST974CEFGAT40 ceramic that MW9743346CEFG and MW9743446CEFG share, so nothing trails across a base bought for its sculpted lines. The outlet still has to exist — a GFCI 120V receptacle within three feet — it simply does not show.

What toilet seat fits the TOTO Guinevere?

The seat that fits the TOTO Guinevere is TOTO's SS224 SoftClose elongated seat, made for this bowl and sold in Cotton, Colonial White, Sedona Beige, Bone and Ebony. The two sets in this collection do not need it — they arrive with a WASHLET S2 or S5 already matched to the bowl. The SS224 is for the toilet-only Guinevere, or as a replacement.

Does either Guinevere WASHLET+ set flush by itself?

Neither Guinevere WASHLET+ set flushes by itself. TOTO's WASHLET comparison puts auto flush on the S7 and S7A, not on the S2 or the S5, so both sets here flush from the chrome trip lever on the tank — which on this line is a styling detail as much as a control. For hands-free flushing, see auto flush bidets and toilets.

Is the toilet-only MS974224CEFG the same ceramic as the Guinevere WASHLET+ sets?

The toilet-only MS974224CEFG is the same ceramic as the Guinevere WASHLET+ sets. Both MW9743346CEFG with the S2 and MW9743446CEFG with the S5 sit on bowl CST974CEFGAT40, which is why searches for “CST974CEFG” land on this line. Quote that bowl number when you order ceramic parts, and the full set number for anything on the WASHLET itself.

What finishes does the TOTO Guinevere trip lever come in?

The TOTO Guinevere trip lever comes chrome plated as standard, with polished nickel, polished brass, matte black, brushed nickel and a color-matched Cotton finish offered as options on the toilet-only model. The handle is the one piece of visible metal on the fixture, so matching it to your faucets is worth a moment — it is far easier to specify at order time than to change later.