Forget the 60/40. Go with a large single for cleanup, in your cleanup zone, and do a separate prep sink in your prep area.

We have a 70/30 sink in a 36"W sink base that fits a standard cookie sheet (just short of 21" long, including handles). The large bowl (21.5" x 18.75") is big enough to fit all our pots & pans, including handles. The small bowl (10.5" x 16") is small enough for smaller jobs such as soaking a dish or other small items without the need to use a dishpan that has to be bought and then stored when not in use, which can be an issue if you're short on storage space.

Yes, single bowls are more popular on this forum, but there is minority here of people who prefer double-bowl sinks.

As to my sink, it's a Ticor sink that is no longer made It's a "D" shape", but there are more "modern" shapes available with similar size bowls. Ticor and Kraus are comparable in materials, etc. While Kraus and Ticor may not be "top of the line", they're still good sinks based on my experiences with Ticor (16 years old and still looks great) and, from what I've read here, Kraus.

If cost is a factor, I recommend the Kraus. Be sure it's a 16 gauge (better than 18 gauge).

Note that double-bowl sinks work best in 36"W or wider sink bases. Smaller sink bases usually mean smaller bowls overall.

My sink:

Hmmm....just checked and neither Ticor nor Kraus appear to carry 70/30 sinks anymore.

Doing a quick search on the Elkay sites, the closest I could find right now is: https://www.elkay.com/products/details/EFRU321910T

Overarching important thought: The sink is the single most-used item in any kitchen, so it's 100% absolutely important that you GET IT RIGHT. It's worth the analysis and comparison that you're doing.

I found this specification sheet for the first sink -- the 32" model: https://www.kraususa.com/media/catalog/product/documentation/KBU24-Spec%20Sheet.pdf . It says the 60% side is only 15" wide, so that's a hard no for your purposes.

I found this specification sheet for the second sink -- the 33' model: https://www.elkayfiles.com/spec-sheets/lkhsr2509rpd_spec.pdf . It does indicate that the 60% side is 18" wide ... but that means your sheet pans would JUST BARELY FIT. Likely it wouldn't quite lay down flat as you wash. It'll be a case of ALMOST RIGHT.

Personally, I'd go for a 33" or 36" one-bowl sink. I see no benefit to the 40% side. Pros to a single bowl sink:

- You can wash your largest pots and pans easily.

- If you need to soak something smaller, you can keep a plastic tub underneath the sink, or you can soak them in a bowl or pot that's already in the sink.

- You only have one drain /only one set of pipes under the sink, so you have more storage underneath.

- Your one drain will be connected to the garbage disposal, which means you'll never have to fish out bitty-bits from the drain.

Thanks all. We've had a single sink for years and my husband really wants two basins for handwashing.

@Biz Presler-Marshall...My husband did as well, that's the main reason we have a double-bowl cleanup sink. My prep sink is a single-bowl, but it's only about 15" wide.

How wide is your sink base? If less than 36", can you get a wider one? What about one of the wider 2-bowl "workstation" sinks?

Just found one that might work for you. The corners are not sharp nor is the sink a "D", which reduces the internal space.

https://www.ruvati.com/products/rvm5300-32-inch-undermount-kitchen-sink-7030-16-gauge-stainless/

I just wish we could fit a 39 inch sink base--but the sink has to be centred on the window and that means no more than 36 unless I'm willing to give up cabinet space.

Take a look at Karran EL-78R Elite Undermount Stainless Steel 33" 16-Gauge Double Bowl 60/40 Kitchen Sink. Inside bowl dimensions: left - 17" x 20" x 10" , right – 13” x 18" x 10”. It comes in both orientations.

I seriously considered it, but finally decided on a single bowl since I felt the smaller bowl is too narrow and too deep to be convenient for me, and I couldn't find anything else that checked all the boxes (I have a feeling that I am going to regret it anyway)

The one I posted says 36" sink base, so it would fit.

Edited to add:

It's close to a 70/30, which is usually more useful than 60/40.

It's also 1/2" wider and 2-3/4" deeper than you need for your pan (13x18).

This one might work for you: Ruvati 33-inch 60/40 https://www.amazon.com/Ruvati-33-inch-Low-Divide-Undermount-Stainless/dp/B077NPJ32G . The bowl is exactly 18" long, so it may barely fit. Most sheet pans are usually 1/2" or 1/4" less than 18". You can measure your ones.

I like the rectangular shape of the Ruvati linked by @Buehl; IMO it looks more current than the shapes of the Kraus or Elkay you mentioned. And if anyone ever wanted to switch to a single bowl, the rectangular shape would work better for that.

So I geeked out a bit and took images from the specs for the Elkay and the spec sheet for the Kraus and overlaid them with graph paper. Based on my non-scientific geekism, it doesn't look like an 18x13 pan will fit in either sink without scraping the sides. Admittedly, the spec images could be a bit off, which makes the images below a guesstimate. But I still prefer the looks of the Ruvati.

Elkay, 1 box = 1 inch, red box = baking sheet:

Kraus: 1 box = 2"; red box = baking sheet:

It's late and I'm super tired, so I may be missing some of your wish list, but this is my dream sink

https://www.creategoodsinks.com/products/36-apron-front-workstation-sink-double-bowl-5lad36-8

It is apron front and a little on the shallower side- I'm tall and leaning forward and down to get to the bottom of super-deep undermounts is no fun.

A sink isn't what your husband uses for hand washing. He uses a faucet. Get a single bowl large enough for a cookie sheet and add a separate second faucet at one corner. You'll be able to fi this single bowl in a smaller cabinet. Even a 27" if that helps with additional storage for the wide drawer units on the sink run.

You guys all have great ideas. Has anyone got the Elkay quartz 33 (ELGULBO3322) offset? It also OUGHT to fit. I wish the Elkay Crosstown had the drains in the back--otherwise we'd just go with that 70/30. But I can't given up trash can space under the sink.