I haven't seen it written anywhere. I can tell you with my own it was quite a difference interior vs exterior, but with drawers especially. widths- I had a 15" wide cab with a drawer - and I couldn't fit a 12" wide recycling organizer (not ikea) into it. but the ikea cutlery organizer 12" fits like a glove in a 15" wide drawer, so figure 1.5' less on each side for a drawer interior. Height - My lower 10" drawer had an 8" vertical clearance, my middle 10" drawer had a 9" vertical clearance. My 5" interior drawers seem to have a 3.5" vertical clearance. But 5" external drawer has 4". So anywhere between 1-2" vertical loss on a lower drawer. Don't know if any of that helps, but I encourage you to plan on the conservative side.

Cyndi, I'm out of town until next week. I'll try to take some pics then. I did look at the Create Good sinks online, but just liked the multiple ledges and the accessories of the Prolific better. Also, I was able to look and touch it, try the accessories and buy it from the local kitchen store which matched the best online price I could find. Should I ever have an issue, they'll help me deal with Kohler. I have to say, I really don't like to order products sight unseen, especially expensive, bulky ones. No, I never considered an apron sink, I think apron sinks fit into farm house or vintage kitchens better than in my modern 60s house. Regarding scratches. The Prolific is not polished SS, so scratches don't show that much and the more use it gets, the more all scratches will blend into a "patina" and will become invisible. I couldn't tell you if it has scratches, I don't remember seeing any, probably because we always keep both racks and the bowl in the sink, The bowl collects stray used glasses or cups during the day until they get put in the DW in the evening. To be honest, I really don't care if my sink is scratched, as for me, it's a working sink, not a mirror, and as such it's super practical, so I don't need it to be "precious". At any rate, our sink is not in the island, and nobody sees its bottom unless they step right in front of it and take the racks out. Sorry, the only pic I have on my traveling tablet isn't a close-up:

Thanks for the response. I thought it probably would, wasn't sure about how much the soundproofing they put on the sink would add to the outside dimensions. Sent a question to the manufacturer but haven't gotten a response yet. Is it your experience that the soundproofing won't push it to more than the 34.5" inside width of the cabinet?

Hello, I am looking for someone to help with two custom Ikea PAX wardrobes for my loft. Please see attached photo's for what I'm looking for. I am looking to have this done ASAP. Thank you for your help!