![GROHE K400 Composite Sink with Drainer, 86cm, in Granite Black, Top-Mounted, 1 Bowl, with Overflow and Automatic Waste Fitting 31640AP0 [Energy Class B]](https://m.media-amazon.com/images/I/41dr-+t2TJL.jpg)





🖤 Elevate your kitchen game with the sleek, durable GROHE K400 – where style meets smart functionality.
The GROHE K400 Composite Sink is a top-mounted, 86cm single-bowl sink crafted from resilient quartz composite in a polished granite black finish. Designed for flexible left or right installation, it features an integrated overflow and automatic waste fitting for convenience. The package includes all necessary accessories and a 5-year manufacturer warranty, making it a premium, durable choice for modern kitchens.





| Manufacturer | GROHE |
| Part Number | 31640AP0 |
| Product Dimensions | 103 x 58.5 x 31.5 cm; 18.04 kg |
| Item model number | 31640AP0 |
| Size | 86 x 50 cm |
| Colour | Granite Black |
| Style | Composite sink with draining board |
| Finish | Polished |
| Material | Quartz composite |
| Shape | Rectangular |
| Installation method | Integrated |
| Item Package Quantity | 1 |
| Included Components | Box contents: composite sink, care instructions; accessories included: eccentric operation, drain fitting, strainer basket valve, mounting kit |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 18 kg |
E**D
Kitchen sink
Good quality very pleased with it. Although it was a European version so I did have to go to a plumbing supply to get a different fitting to attach it to the waste pipe
A**A
Nice solid sink and looks nice too
Nice looking sink comes with attachment for under sink or over sink placement. Looks and nice and doing the job so far.
S**T
Arrived with cracks
UPDATE: Grohe refused to do an exchange, I could only return and repurchase (and price has increased). Thankfully the second sink was in perfect condition. It’s been in use for over a year now and I’m thrilled with it - it looks good and is hard wearing (it’s in a utility room). I stupidly left a metal scourer in it which rusted and has stained the sink but thankfully it’s not too noticeable. Overall thrilled with my purchase - increased to 4 stars - knocking one off for terrible customer service.The sink looks great but unfortunately it arrived with hairline cracks on either side. It was well packaged with no damage on the box so I can only assume it was like that when packaged - shocking quality control processes.Contacted Grohe by phone - no apology just told to return to Amazon. Not good enough when I’m left without a working sink, and having to pay a builder to come back to sort it out. Builder has also cut worktops ready so an alternative product isn’t an option.So they said send an email with photos which I’ve done and currently awaiting a response. If resolved satisfactorily I will update this review, but so far I’m not impressed at all.
A**R
Great value
Great value and aesthetically very nice on kitchen island 🌟🥂
M**.
Quality!
Good quality. Assembly needed a bit of a fight as the attachments at the bottom are quite hard to assemble.
L**G
Stylish, fits perfectly in my small kitchen
I have a small kitchen, fits perfectly.
L**N
Excellent product has proved to be very durable
Excellent product has proved to be very durable, only negative is bottom is not flat (tappers to drain) help drain but tall items can/do fall over
C**E
Looks great!
Fairly simple to install, looks great and seems very durable. I’m really happy with this purchase.
Trustpilot
3 days ago
4 days ago