Shower technical guide
Kohler Pristine Rectangular 25.4 cm single-function filtered rainhead, 12.0 lpm: technical guide
Kohler Pristine Rectangular 25.4 cm single-function filtered rainhead, 12.0 lpm is a shower from Kohler. Minimalistic and contemporary, the KOHLER Pristine rectangular 25.4 cm single-function filtered rainhead is the perfect solution for a cleaner and healthier showering experience. With a powerful full coverage spray offering an all-encompassing deluge of water for comfortable everyday use, its filter system promotes better skin and hair health by removing up to 99% of chlorine and particulates. Featuring easy, tool-free installation and a hassle-free one-click filter replacement design, this filtering rainhead delivers optimal water flow and improved water quality without compromising performance.
- Chrome finish is easy to keep clean
- Polished Chrome, Vibrant French Gold, Vibrant Rose Gold… finish suits a designer bathroom
- Single-function rainhead
Best for
- Ceiling-mounted rain showers
Pros
- Chrome finish is easy to keep clean
- Polished Chrome, Vibrant French Gold, Vibrant Rose Gold… finish suits a designer bathroom
- Single-function rainhead
- Full coverage spray produces an encompassing spray ideal for everyday use
- 12.0 lpm (3.17 gpm) maximum flow rate at 5.5 bar (80 psi)
Cons
- Coloured finishes need gentle, non-abrasive cleaning
Key specifications
As stated by the maker.
- Brand
- Kohler
- Collection
- Pristine
- Product number
- K-38973IN
- Type
- Rectangular 25.4 cm single-function filtered rainhead, 12.0 lpm
- Category
- Showerheads
- Overall length
- 10 in
- Overall width
- 10 in
- Overall height
- 6-5/16 in
- Installation
- G 1/2 inlet connection; Ceiling-mount; Requires single-function rainhead shower arm and flange (sold separately)
- Finishes
- Polished Chrome, Vibrant French Gold, Vibrant Rose Gold, Vibrant Brushed Bronze, Matte Black, Vibrant Brushed Rose Gold
Warranty and validity
- Warranty
- Not stated in the maker’s catalogue. Ask us before ordering and we will confirm it with the brand.
How to use it
- An overhead (rain) shower is fixed to the wall or ceiling with an arm; a hand shower connects to a hose and a holder or a diverter outlet.
- Large rain showers need more water to feel full; in a home fed by an overhead tank, a smaller head or a pressure pump gives a better spray.
- Check that the shower’s connection matches the arm, hose or diverter it will fit to.
Installation
- Mark the arm or holder height before tiling, so the outlet comes out where the shower should sit.
- Seal the threaded joint with PTFE tape and tighten by hand; overtightening damages the head’s connection.
- Run water through the line before fitting the head, so debris does not block the nozzles.
Care and maintenance
- Rub the rubber nozzles with a finger every few weeks to clear scale; most modern shower heads are made for this.
- Clean the finish with mild soap and a soft cloth. Acid cleaners and scouring powders damage chrome and coloured finishes.
- In very hard water, soak a removable head in a mild vinegar solution only if the maker allows it for that finish.
Buying tips
- Bigger is not always better: a large head on low pressure gives a weak spray.
- Multi-flow hand showers let you switch between spray patterns; check how many flows the product lists.
- Buy the arm, hose or holder of the same finish, so the set matches.
Maker and compliance details
- Manufacturer / brand
- Kohler
- Model code
- K-38973IN
Compare with similar products
| Specification | | |||
|---|---|---|---|---|
| Price | from ₹10,249 | from ₹9,839 | from ₹9,550 | ₹7,350 |
| Brand | Kohler | Kohler | Parryware | Jaquar |
| Collection | Pristine | Rainduet | Hand Shower Single Flow | — |
| Product number | K-38973IN | K-39507IN | — | — |
| Type | Rectangular 25.4 cm single-function filtered rainhead, 12.0 lpm | Round 25 cm single-function rainhead, 10.5 lpm | — | — |
| Category | Showerheads | Showerheads | — | — |
| Overall length | 10 in | 10 in | — | — |
| Overall width | 10 in | 10 in | — | — |
| Overall height | 6-5/16 in | 3 in | — | — |
| Finishes | Polished Chrome, Vibrant French Gold, Vibrant Rose Gold, Vibrant Brushed Bronze, Matte Black, Vibrant Brushed Rose Gold | Polished Chrome, Vibrant French Gold, Vibrant Rose Gold, Vibrant Brushed Bronze, Matte Black | — | — |
Values as each maker states them. “—” means the maker does not state it.
Frequently asked questions
The maker’s catalogue does not state a warranty for this product. Ask us before ordering and we will confirm it with the brand.
Going by its stated specifications, it suits: Ceiling-mounted rain showers.
It will work, but the spray is gentler on low pressure, and more so with a large head. A booster pump helps where pressure is low.
Rub the rubber nozzles with a finger to break off the scale. For stubborn scale, follow the maker’s cleaning advice for that finish.
Product facts are from the maker’s published data; the use, fitting and care advice applies to showers in general. Last updated 9 November 2026.