Watt Concealed Shower Mixer, 2–5 Outlets
🚚 Delivery in 0–6 weeks · Free consultation
Watt concealed shower mixer, 2–5 outlets – Treemme – concealed single-lever shower mixer, with one three-way valve for each outlet and a round temperature control handle, on a narrow plate 80 mm high. Available with 2, 3, 4 or 5 outlets.
The Watt collection, designed by Studio Q-BIC, has an industrial and graphic character: a long, narrow plate on which small three-way valves are aligned, one for each outlet, and a round temperature control handle. A precise concealed shower with simple and secure controls.
What you receive: the external part (the plate with the valves and handle), in the chosen model and finish; the concealed body only if you choose the complete set.
External part or complete set?
This product is wall-mounted and has two parts:
- external part – what is visible: the handle, plate or rosettes, pipe, in the chosen finish;
- concealed body (code RWIT 2B89 ZZ 30 / RWIT 2B90 ZZ 30 / RWIT 2BE4 ZZ 30 / RWIT 2BE5 ZZ 30) – the part that is built into the wall by the plumber. It is not visible and is the same for all finishes.
Without the concealed body, the product cannot be installed. From the Set menu, choose:
- External part only – if you already have the Treemme concealed body installed in the wall (for example, if you are replacing a mixer or the plumber has already installed it);
- Complete set with concealed body – for a new installation: you receive everything you need.
Finishes
11 finishes, from classic chrome to matte black, matte white, gold and brushed rose gold. PVD finishes are highly resistant to scratches and limescale.

Technical specifications
- External part codes: RWIT 2B89 .. 01 (2 outlets), RWIT 2B90 .. 01 (3 outlets), RWIT 2BE4 .. 01 (4 outlets), RWIT 2BE5 .. 01 (5 outlets)
- Concealed body codes: RWIT 2B89 ZZ 30, RWIT 2B90 ZZ 30, RWIT 2BE4 ZZ 30, RWIT 2BE5 ZZ 30 (one for each model)
- Plate: 230–410 × 80 mm, depending on the number of outlets
- Flow rate: 15–20 l/min per outlet
- Installation: wall-mounted
- Collection: Watt – Studio Q-BIC design
- Material: brass, galvanic and PVD finishes
- Manufacturer: Treemme Rubinetterie, Asciano (Siena) – Made in Italy
Complete dimensions are shown in the technical drawing in the image gallery.
Frequently asked questions
How do you use it?
Each outlet has its own three-way valve: turn it to start the water and adjust the flow rate for that outlet. You can use several outlets at the same time. The round handle controls the temperature.
How many outlets do I need?
One for each water point: 2 for the shower panel and hand shower, 3 if you add a waterfall or side jets, 4–5 for a complete spa shower.
Do I need the concealed body?
Yes, it is mandatory for a new installation. Choose “Complete set with concealed body”. The “External part only” option is only for those who already have the Treemme concealed body installed in the wall.
How is it installed?
Installation is carried out by a plumber. For concealed models, the body is built into the wall before tiling, and the external part is installed at the end.
How long does delivery take?
Delivery to your country takes 0–6 weeks, depending on the finish.
For projects, technical sheets or help choosing the finish, the IdeaCasa team is at your disposal – free consultation.
Import duties and taxes are paid by the customer on delivery.
Manufacturer: Rubinetterie 3M S.r.l. (Treemme), Via Enrico Mattei 10, 53041 Asciano (SI), Italy · export@rubinetterie3m.it