InSinkErator Extension for Involve Hot Water Dispensers-EXT-10 - The Home Depot
Message to Our Customers


Model # EXT-10

Internet # 100005221

Extension for Involve Hot Water Dispensers

InSinkErator Extension for Involve Hot Water Dispensers

This item has been discontinued.
The Home Depot no longer carries this specific product.

$26.69 / each


Model # EXT-10

Internet # 100005221

Store SO SKU # 1000972703

Enjoy the ease and convenience of installing the Involve Series dispenser to any countertop, up to 3 in. thick, with the InSinkErator EXT-10 extension. The EXT-10 includes a plastic stem and mounting nut that can be simply threaded on and off to adjust to varying countertop thickness. The plastic stem and mounting nut come pre-installed on the instant hot water dispenser for quick and easy installation.

  • Black plastic construction
  • Built for the InSinkErator Involve View model hot water dispenser
  • Comes pre-installed from the factory on all Involve View models
  • Works in most solid-surface countertops up to 3 in. thick; compatible with multiple types of countertops


Assembled Depth (in.) 
2 in 
Assembled Height (in.) 
3.25 in 
Assembled Width (in.) 
2 in 
Can Be Cut To Length 
Color Family 
Number of Extensions Included 
Plumbing Part Type 
Warranty / Certifications
Manufacturer Warranty 


Rated 3.8 out of 5 by 6 reviewers.
Rated 5.0 out of 5.0 by Hot Water Despenser Have had this product now for 5 years and my wife and I love it. Great for hot cereals, drinks & recipes. When we changed out our counter top and it was thicker than our old one I was very glad that there was a extension that attached . February 4, 2015
Rated 5.0 out of 5.0 by Evolve Extension This little extension allows one to use the hot water dispenser with thicker (e.g., granite) countertops. Without it, the spigot can't be used (threads don't extend below the countertop). Works well. My only complaint is that this little plastic piece costs $30... July 6, 2014
Rated 1.0 out of 5.0 by Extension for In-sinkerator hot water dispensers This product is not worth anything. It is wrongly designed. We tried to use it and gave up. Fortunately we had an adapter made for the application using a Kohler hot water dispenser and it had the same threads as the In-sinkerator hot water dispenser. The reason for using this product is to install the hot water dispenser on a thicker piece of granite. This is a fairly common problem. However, when the sink is installed underneath the granite the holes in the sink aren't necessarily concentric with the sink holes and, if they are not exactly concentric then the washers for the extension will not fit through the sink hole to go against the granite hole for a solid mounting. And, as such, one can never tighten the hot water dispenser. Our solution was to use a special piece machined to fit through the holes and tighten the dispenser. March 24, 2008
Rated 5.0 out of 5.0 by Worked Great Ordered it wondering if it would work ok after reading other reviews, Got it and it worked perfect for me, installed my insinkerator instant hot on a granite counter top and it tightened right down firmly without stripping or breaking as others mentioned so I was a happy camper! April 13, 2014
Rated 5.0 out of 5.0 by Product was as advertised, worked well, and was received promptly. The part fit properly on my dispenser and in the counter-top mounting hole. It was easy to install. April 30, 2014
Rated 2.0 out of 5.0 by extra This extension is something that should be provided by in-sink-erator when you purchase an instant hot water dispenser. Once I received the extension it provided more problems in that the nut provided with the instant hot water dispenser to tighten the unit to the counter would strip on the threads of the extension. Overall the whole installation process was made even more difficult. March 31, 2007
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