I want to replace the counters. A stainless 30 inch won't work. If it's undermount, it can't be larger than 27 according to manufacturers specs.

"My dilemma is that i have a 30 inch base cabinet and all undermount sinks must be no more than 27 inches to fit."

You and the manufacturer are incorrect. A 30" sink will undermount into a 30" cabinet, a 33" into a 33", a 36" into a 36" cabinet as long as the sink is strapped, not clipped, in place. See for yourself please.

Here's a Corian sink replaced with a 33" Kohler in a 27" cabinet.

And by strapping it in does it make is easier to replace in the future, without having to tear the sides of the base cabinet? And does strapping it instead of clipping cancel the manufacturer warranty?

Strapped sinks change out in a little over an hour; clipped, not so much. Fortunately sinks have no moving parts, so a warranty means little. If you make a claim, they're going to send you a new sink only, not pay a penny toward installation, so you'd better strap. And they've no way to know if the sink was strapped or clipped with their leaky clips.

And if it's warranty that worries, I'd be more concerned about my estone manufacturer prohibiting the installation of clips. Which they do.

Thank you for your help! Do you have any pictures of what a strapped sink? From the inside of the cabinet so i get an idea of what you mean.

Here you go.

Here again, the manufacturer doesn't know the best way to install their product. You measure the wires with the sink upside down, run the wires through the clips, then screw the clips to the cabinet sides. The method in the video is a PIA and difficult to get the wire length adjustment right. And don't screw the clip so high on the cabinet or you're screwed if you have to adjust the wire length. 3-4" down is fine.

Lisay6666. The sink you’ve chosen is really nice. I followed the link you provided and there’s a number. Why don’t you call them and ask them if it will work in your situation? I have a 30” wide cabinet and a 27 1/2” wide (inside dimension) under-mount stainless steel sink. Works well.

Danny:

Her link says:

"Outer Sink Dimensions: 29" L x 19" W x 10" D...Minimum cabinet size: 33"."

Kraus is incorrect. Their sink will undermount into a 30" base cabinet if the sink is strapped, not clipped, in place. Kraus is allowing space for fat plumber fingers access to tighten their clips. If the sink is strapped, no finger access is needed as the sink is secured with the turnbuckle near the drain where there is plenty of room.

Danny, Do you have the model of your current sink so I can take a look at it?

Joseph, I spoke with the fabricator and he said even if we strap it in, the outer lip will still have to sit on the cabinet edge, thus making removal, if needed, only possible if they remove the countertop. Does that sound correct?

Your fabricator is incorrect. No countertop removal is necessary. You simply tap the cabinet front off, remove any cabinet side that's in the way, slide the sink out the front, install the new sink and re-install the cabinet front. Just like in the pictures above.

joseph: I was merely suggesting she call the number and ask. Doesn’t hurt to ask about a product. Your photos show two cabinets cut away. What if (as in my case) there are drawers on either side of the sink?

lisay, it is an IKEA Norrsjon sink, which can be under mount or top mount, depending on your need. Model #491.579.14 A year ago it was $235.00.