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Bosch gas cook top installation measurements (C) Daniel Friedman Gas Cooktop Measurements
C ooktop dimension & countertop opening measurements for buying or installing a cooktop

Gas cooktop measurements:

This article shows how to measure for a cooktop installation into a kitchen countertop opening & lists the specific measurements you should make before buying any cooktop & measurements to make again before attempting to install a gas cooktop into a countertop.

By making all of the necessary measurements you can avoid buying a cooktop unit that doesn't fit. In addition to the countertop opening length and width there are depth and obstruction concerns to address.

This article series explains the steps in installing & testing gas appliances and includes a detailed procedure for converting from LP gas or "bottled gas" to natural gas or "piped in gas" at a building.

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

- Daniel Friedman, Publisher/Editor/Author - See WHO ARE WE?

Measure Twice & Cut Once Before Ordering & Installing a Gas Cooktop

Tools for gas cooktop fuel conversion & installation into a countertop (C) Daniel FriedmanYou will need a measuring tape and should have already used it to make triple sure that the new gas cook top will fit into the countertop opening.

Measure the countertop opening length and width and the depth between the countertop surface and any obstructions below such as a built-in ovenb or other piping or cabinet components.

[Click to enlarge any image]

Article Contents

Preliminary or Old Cook Top Measurements for Ordering the New Cooktop

You may have made preliminary measurements of the exterior dimensions of an existing or already-installed cook top if you are replacing an old unit like the one shown here.

We measured the countertop opening width and depth and the depth of the insert portion of the existing cooktop (photo above left).

Watch out: when measuring for any countertop cooktop installation, you want to be sure not only that the new cooktop will fit into the countertop opening (and clear any obstructions) but also that its supporting lip that rests on the countertop surface will be adequate for support and to permit sealing against spills that might otherwise leak into the space below.

You may have made preliminary measurements of the countertop cutout opening by carefully lifting the existing cook-top up a bit without having fully disconnected it. This procedure is likely to be followed if you are making measurements to permit ordering a new gas cook top and thus want to keep using the old one until the new cook top arrives.

At above left we have lifted the old gas cooktop, a Jennair unit, partly out of its countertop to measure its depth. A question was whether the new countertop would be deeper and whether it might or might not have adequate vertical clearance space above a built-in oven installed below this countertop.

Watch out: you may find as I did that the preliminary measurements may have been good for ordering the new gas cooktop, but on removing the old one there may be some surprises such as intrusions into the below-counter space that make installation of the new cook top or its piping difficult.

At the left side of our photo of the existing Jennair gas cooktop above take a close look at that bit of plywood cabinetry extending into the cooktop cutout space. I didn't notice that little intrusion until - ick - making a test-fit of the new cooktop.

Despite all of our earlier measurements, it did not fit! Some adjustments were needed as are illustrated

at GAS COOKTOP INSTALLATION DETAILS.

Pre-Installation Cooktop Installation Measurements

Bosch gas cook top installation measurements (C) Daniel Friedman

To be sure that the new cook top will fit into the existing countertop opening and space measure at least the following:

Bosch gas cook top installation measurements (C) Daniel Friedman

Bosch gas cook top installation measurements (C) Daniel Friedman

 

Amana Cooktop Openings & Replacements

Amana gas cooktop being replaced by Bertazzoni (C) InspectApdia.com TrishQuestion: remedy for 1/8" difference in depth between Amana & Bertazzoni cooktops

(Dec 5, 2020) Trish said: said: Hello! Need your help!

We just purchased a gas cooktop to replace an old Amana.
It sits in a butcher block counter with a highly used drawer immediately under cooktop.

The new one is made by Bertazzoni with a low profile. It was the only 4 burner brand that we thought could accommodate the "depth" and just require shaving a bit off each side.

HOWEVER--we now find that there will be an 1/8" difference in the height, thus not allowing the cooktop to rest flush on the counter.

" Before we pack it back up to send back ;( is there any remedy you could suggest?
Including photos of old and new.

Moderator reply:

Sure Trish;

I need to know a bit more but I suspect that your new cooktop is smacking into the edge of the top drawer. The exact clearance needed is of course model dependent but a typical Bertizzoni depth dimension is 6 1/2" as you'll see in the second Bertazzoni IO manual we cite below.

Check to see if that's the case, and if-so, it should be perfectly ok to trim off a bit of the drawer sides and back as needed to allow it to move freely;

Check the required clearance to combustibles in the cooktop installation instructions too.

And of course you will take care not to pile up stuff in the drawer so as to jam it against the cooktop bottom.

If you don't already have it, see these

Bertazzoni gas cooktop sizes & cutout dimensions at InspectApedia.com

[Click to enlarge any image]

 

Reader follow-up:

Thanks for your reply.
We have not installed the cooktop and were readying to return it.
The area under the cooktop is not "open", per se.
Rather, there is a 1/2" plywood crumb shield under the cooktop, but above the drawer...part of the cabinet structure.

Moderator reply:

you may need to cut or remove that crumb shield; as long as you have fire clearance distances specified by the Bertazzoni installation instructions you should be ok.

 

Samsung Cooktop cut out dimensions

Samsung gas cooktop counter cutout dimensions at InspectApedia.comQuestion: cut out dimensions for Samsung 30" gas cook top

2017/11/20 Terry said:

Find cut out dimensions for Samsung 30" gas cook top

Reply:

Terry, the cutout dimensions for the Samsung 30" gas cooktop might vary among specific sub-models but in general you will need
to cut

a rectangular opening 28" x 19 5/8"

and the back of the cutout needs at least 2 7/8" clearance from the rear wall or splashboard.

The cooktop also needs at least 12" free clearance on either side of the opening,

[Click to enlarge any image]

and you need at least 30" above the cooktop to any overhead cabinet over the cooktop and 18" vertical clearance from those left and right 12" free clearance side areas too.

Watch out to be sure you have adequate clearance space under the countertop too - you need at least 3 9/16" total clearance under the counter
or put another way, you need at least 7/16" clearance to combustible surfaces below .

That rear clearance is important - without it you won't be able to connect the gas piping to the cooktop.

You'll also need access to an electrical receptacle below the countertop and plumbing space for the gas piping.

See this

On 2018-02-23 by (mod) -

Dwight

I can't cite a specific model and brand but there certainly were cook tops that fit that opening. Remember that you can always go larger by enlarging the cutout.

On 2018-02-23 by Dwight@priusa.com

I have electric counter-top I want to replace with gas; hole in counter is 34 inches in length and 20 7/8" in width -- do you know of any standard size/brand that will work

On 2017-11-20 by Terry - what are the countertop cutout dimensions for a Samsung 30-inch cooktop?

Samsung 30-inch cooktop cutout dimensions cited & discussed at InspectApedia.comFind cut out dimensions for Samsung 30" gas cook top

On 2017-11-21 by (mod) - cutout dimensions for the Samsung 30" gas cooktop

Terry, the cutout dimensions for the Samsung 30" gas cooktop might vary among specific sub-models but in general you will need to cut a rectangular opening 28" x 19 5/8" and the back of the cutout needs at least 2 7/8" clearance from the rear wall or splashboard.

The cooktop also needs at least 12" free clearance on either side of the opening,

and you need at least 30" above the cooktop to any overhead cabinet over the cooktop and 18" vertical clearance from those left and right 12" free clearance side areas too.

Watch out to be sure you have adequate clearance space under the countertop too - you need at least 3 9/16" total clearance under the counter
or put another way, you need at least 7/16" clearance to combustible surfaces below

That rear clearance is important - without it you won't be able to connect the gas piping to the cooktop.

You'll also need access to an electrical receptacle below the countertop.

See this


Sears Kenmore Gas Cooktop Countertop Opening Size

Sears Gas Cooktop #79032549411 at InspectApedia.com (C) P.M. Question: countertop opening size for Sears Kenmore gas cook top Model #79032549411

2019/07/25 PM wrote by private email:

How much larger should the mounting hole for the gas cook top be from the lower pan?

Do I need a little space between the cook top lower pan and the counter edge?

Reply:

PM, you need just enough larger to insert the cooktop body and to accomodate thermal expansion. In the installation instructions you'll see the cutout dimensions.

Don't over-cut the opening or you'll have trouble mounting the cooktop to the countertop and may even have an ugly gap showing, leaking into the base cabinet below.

I could not locate the manual for the sears cooktop for the exact model number you cite - but if you have bought that cooktop new it should come with installation instructions in complete detail - including countertop opening dimensions, set-up for natural gas vs LP, etc.

If you have that manual I'd like to see a PDF copy or other details that would let me find one.

Here is a Kenmore 79032542410 cook top manual and a separate installation guide that may be close-enough to your model to work for you.

Sears gas cooktop typical cutout dimensions for countertop opening - cited and discussed at InspectApedia.com

[Click to enlarge any image]

SEARS Kenmore 79032542410 GAS COOKTOP INSTALLATION GUIDE [Image File] these Gas Cooktop Installation Instructions apply to 30" and 36" models.

SEARS Kenmore 79032542410 GAS COOKTOP MANUAL [PDF]

Reader followup:

Thank you for your response; I will tell the contractor tomorrow

and see if he has any other questions.

...

The reason we had to contact you is that it did not have the installation instructions.

I bought it at a Sears Outlet store and for some reason they couldn't locate the paperwork, but it was the stove top I wanted so I got it. My contractor and the man that is installing it knows enough about installing that it is not a problem.

The one concern was that the stove top would heat the Formica counter and turn it another color. I live in a rural area and we have propane.

The only information we have on this stove top is from the stickers showing the Model # and the Serial #, which is #3F82702079. We are doing fine; in fact it is being installed as I am writing this. 

Moderator reply:

Sears Gas Cooktop #79032549411 at InspectApedia.com (C) P.M. Send me photos of data tags and other ID information and I might have more success; the manual will have other helpful tips.

Basically you don't want the cutout any bigger than necessary as a too-big hole reduces support for the stovetop whose lip needs to rest on the countertop.

Also think about distance from the front and rear of the counter when locating the hole as you have to clear the cabinet front at the front and at the rear you don't want to be closer to the wall than necessary.

After the unit is installed I use a small bead of clear silicone sealant to be sure it doesn't wiggle around (which is unsafe).

I look forward to seeing some photos of the counter, cutout, unit, and its installation.

Reader followup:

ll went very well; my contractor knew enough about installation that we did not have any problems.

The propane guys were here a couple of days ago regulating the gas burners, and they too said everything is great.

I'll be moving in within the next couple of weeks.

 

Frigidaire cutout dimensions and side clearances for Frigidaire & LG 30-inch gas cooktops

On 2020-04-03 - by (mod) - Frigidaire gas cooktop installation: countertop cutout dimensions

Frigidaire FGGC3047QB Gas cooktop cutout and installation dimensions cited & discussed at InspectApediaq.comGood going, Steve. Keep us posted as that will help other readers, and perhaps post a photo of the cook top before and after installation and also let's take a look at the specific installations for the Frigidaire cooktop Model #FGGC3047QB.

You can see it at

Gives these

Frigidaire Gas Cooktop Dimensions: Cut-Out

Height: 8"
Width: 27-1/4" - 28-1/2"
Depth: 19-1/8" - 19-3/4"

Frigidaire Gas Cooktop Dimensions: Exterior

Height: 5"
Depth: 21-3/4"
Width: 30"

That "Width" is doubtless the actual with of the exposed cooktop as it sits atop and laps over onto the countertop.

On 2020-04-03 by Anonymous

The biggest unit I could find was 21 3/4 deep on a Frigidaire. Model #FGGC3047QB. I called the manufacturer to confirm the depth which they did. So we'll see. Fingers crossed!


LG Cooktop Openings & Installation Enlargement or Shrinkage as needed

Enlarging the cooktop opening to fit (C) Daniel Friedman at InspectApedia.comOn 2020-04-03 - by (mod) - LG Cooktop cutout opening enlargement to fit

How annoying. I've run into this issue before. Often you can make an opening bigger as long as the drop-in base clears the side drawers.

In my photo I'm illustrating using a chisel to remove just one ply from the sides of abutting cabinets below a granite cooktop cutout opening so that we could squeeze in a new Bosch gas cooktop that was just slightly larger than the problematic Jenn-Air model it was replacing.

On one occasion we also made an opening smaller but that's another story.

On 2020-04-02 Steve

Well, LG said I was good to go however the darn thing didn't fit my hole. The specs said it was 21 11/16 deep but in fact it was only 21 1/4, So, if you happen to know a gas cooktop that's 30 x 22 (or just a little bit smaller) please let me know!

On 2020-04-02 - by (mod) - side clearances to combustibles are to side wall above countertop vs. to drawer sides inside the cutout opening?

Steve

I think that by "side wall" they're talking about an abutting wall extending from the countertop surface upwards; I've never seen a countertop cutout for a range that had nearly a foot of free space left and right down inside the opening.

But to be perfectly certain it'd make sense to give the manufacturer's customer support a call.

call LG at 800-243-0000

LG also offers this support website https://commdisplay.lgsupport.com

Do let me know if I've got this right as we don't want to burn down the house.

On 2020-04-01 by Steve

LG Gas cooktop cutout opening in countertop giving clearance distances to combustibles - cited & discussed at InspectApedia.comThe pdf is very helpful, thanks for posting, My question about distance relates to diagram 1 where it says:

A” min. clearance from cutout to sidewall on the left of unit”

where A = 11 13/16 inches. I have the 11 13/16 inches to the sidewall but before the sidewall are drawers

I'm wondering if the proximity of the drawers to the cooktop will make them combustible. As you say, I may be confusing combustibility with clearance. I see what you mean about the wood supports.

The island does have two wood supports that sit on either side of the hole where the cooktop fits. The image I sent you was a bad one but the supports won't interfere with the space where the cooktop goes.

Thanks so much for taking the time on this. I really appreciate it. I'm not exactly confident my contractor knows what's going on with the cooktop so I appreciate this forum.

On 2020-04-01 - by (mod) -

Steve

If you don't have it, I found this

Are we confusing the clearance to combustibles and to cabinets above the cooktop with its side clearances?

Also I can't tell from your photo but it looks to me as if the wood supports for island drawers project into the cutout space into which the cooktop must drop-in.

On 2020-03-31 by Steve

And just a quick follow-up. My contractor at first said it was fine, then said maybe it's not fine, and then said it was fine. So, I'm just a bit confused!

Thanks for the quick response. The cooktop is LG 30" Black Stainless Steel Gas Cooktop
Model: LCG3011BSS.

The photo I've attached is looking down and to the left. I have about 15 inches from where the cooktop will sit to the island side wall but as you see I have shelves the sit between the cooktop and the island wall.

On 2020-03-31 - by (mod) -

Steve

Tell me the brand and model cooktop so that together we can look at the manufacturer's clearance requirements drawings.

And post a photo if you can of the island and the clearance question.

Typically there are quite a few gas cooktop clearance specifications such as distances to gas piping as well as to combustibles.

Shown here is just A generic EXAMPLE (not your cooktop) of a gas cooktop fire clearance drawing.

It's apparent that the side clearances given are to a sidewall at and above the countertop, not interior side clearance distances.

On 2020-03-31 by Steve

I'm trying to install a gas cooktop into an island in my kitchen. Previously there was an electric cooktop which I removed.

My question is about the distance needed between the cooktop and the sides of the island.

The cook top instructions say I need 11 inches left and right from the cooktop to the sides.

I have more than 11 inches to the sides of the island but I have shelves and pull out drawers that sit just a few inches away from where the cooktop will go.

So, my question is: can I install the gas cooktop with the shelving so close to where the cooktop will sit in the island. Thanks.

 

Small Cooktop Openings & Installations

Question: find a cooktop that fits a 26.5 x 18.5 inch cutout

2020/12/20 Kim said:

Looking to replace my parent's very old cooktop but the cutout dimensions are smaller than what seems to be standard these days.

The cutout is 26.5 x 18.5. Any guidance you can share to direct my search for the replacement? Expanding the cutout in the (old) countertop is daunting. Appreciate your input.

Moderator reply:

Kim

There are some 26-inch cooktops still sold, but you'll want to start by identifying the cooktop type: gas vs electric.

Also if you identify the brand of your parent's present cooktop that may give us a hint of a manufacturer who produces a small cooktop line.

For a wider choice of cooktop sizes, let's start by looking at the whole countertop and its dimensions.

Often we can cut an enlargement into an existing cooktop opening; that will greatly expand the number of options available.

On 2019-12-28 - by (mod) - small cooktop openings

Chris,

You should see my reply from minutes ago, though normally I ask for more patience: we have thousands of readers and questions so sometimes an immediate reply isn't possible.

Sometimes you do need to refresh the page or even refresh your browser's cache to see an updated page and comment.

About enlarging the cutout: if the top is marble you'll want to hire a professional familiar with cutting that material.

On 2019-12-28 0 by chrispazzani

I just posted a question about a small cutout spec but am not sure how I see a reply so I am commenting again. Thank you.

On 2019-12-28 by (mod) -

Christine,

THe measurement could be off, but in any event it's usually trivial to simply cut the opening larger.

Watch out, however: never cut the opening larger before

1. checking the dimensions against the actual installation instructions for the new cooktop

2. as my wonderful carpentry teacher Bernie Campbalik told us over and over

MEASURE TWICE

CUT ONCE

On 2019-12-28 by Christine

My daughter has a 36 inch cooktop that needs to be replaced. The repair person who came out said the measurements of the cutout were 32 by 18.5. We have looked and looked for a replacement with such a small cutout spec but find nothing less than 19.

Is his measurement incorrect perhaps? Have sizes changed over the years? Will it just be easier to enlarge the cutout a bit? This is an older kitchen that she is not ready to do a full remodel on so cost is an issue. Any advice is greatly appreciated.


...

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