Thanks for all the replies - I can understand why people are suspecting my contractor of ignorance. That can happen, but I don't believe it to be the case this time. I think he is making sure I am happy with the outcome and have a oven that won't tip or tear out cabinet face frame. Maybe he is being over cautious.... It sounds like it is possible to just set the 27 inch oven on top of a base support instead of IN a 27 inch cabinet - is this correct? Then use some filler pieces if there is any space left exposed, right? Ok, so how would you secure the oven if you are NOT screwing clips to the face frame. If we were to anchor it to the back of the wall, it would certainly be secure, BUT, if the oven ever needed servicing or removal, would we have to remove our granite counter to get at it? Also, what should we do about supporting the granite counter above? Should we use the MDF vertical cabinet sides on either side of the oven?? I'm not at all concerned about the cost of the cabinet. It was only $130, then Home Depot gave me another $50 off when I asked about the problem with their cabinet specs. My only concerns are making sure the oven is secure with support for the granite. This oven will be adjacent to a wall, so it is at the end of a line of countertop.

Deborah: Kohler is wrong. They are trying to think ahead to allow room for plumber hands to tighten junk and leaking clips. A 27" sink undermounts into a 27" cabinet if the sink is strapped, not clipped or blocked, in place. Plenty of room under a sink for tightening. Hercules Universal Sink Harness or Sink Straps. You can believe Kohler or you can believe a guy who has done this thousands of times and has pictures to prove it. I put a 33" sink into a 27" cabinet last month.

Still, I only have a 27 inch sink base and the Kohler web site contains a typo that I asked them to correct. They said my sink needed a 36 inch base, it is only 25 by 22. As it seems with everything in this project, I still received wrong info in an email from them so I called. After a long while on the phone, a tech confirmed the sink should fit in the 27 base, should, no guarantee. We did have to carve the cab, a big no no, but this is one of those things everyone does so I am told. A large sink and a DW was important to me and I have a small space. Why don't you call Kohler before you cancel anything. I really wanted a white sink and still feel it was a gamble but it did fit after Dh carved the cabinet. I did get words from the granite fab about how large the sink was but they are working around it. Something to keep in mind is how heavy a cast iron sink is. Mine is still supported by the cab. There is also some good info on this forum about getting the bigget sink into the cab that you can. Good luck!

It will probably work, with cutting the sides of the cabinet. You'll have to pull the top, or destroy the cabinet if you ever need to remove the sink.