Foundations®

Two Handle Kitchen Faucet with Spray

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21988LF-OB is rated 4.2 out of 5 by 117.
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  • 4-hole installation
  • Side sprayer conveniently included
  • Backed by Delta Faucet's Lifetime Limited Warranty
  • Water-Efficient
  • No-Lead Compliant
Finish: Oil Bronze
List Price*: $226.40
Base Parts
21988LF-OB
List Price*: $226.40
  • Meets standards set by Americans with Disabilities Act
  • Includes convenient side sprayer
  • 4-hole 8 in. installation
  • Standard spout swivels 360degrees for complete sink access

Special Features

  • With Side Sprayer
  • ADA Compliant

Installation Information


4-hole 8" installation


  • Flow Rate: 1.80 gpm @ 60 psi, 6.8 L/min @ 414 kPa
  • Spout Height: 12"
  • Spout Length: 8-1/8"
  • Fittings Type: 1/2" IPS connection
  • Deck Thickness: 1.31"
  • Valve Type: Washerless stem cartridge
Rated 5 out of 5 by from Looks good, installs easy and great warranty. I purchased the Model 21988LF over a month ago and replaced a NON Delta faucet that was on a deep sink in the utility room. It was a washer type and over thirty-three years old. I replaced many washers during those thirty-three years and one valve seat. The cold water supply to the old faucet broke one day and WHEN DID IT? You guessed it, when I wasn't home. Water was everywhere when I returned. I recently read the one and two star reviews about the flimsiness of the 21988LF faucet handles. People stated that they flex when turned off. Folks these are washer-less faucets and are made to be turned off and on with one or two fingers. Yes during the "good ole days" the washer type faucets offered more resistance to movement and at times you really had to crank down on them to stop a drip. When that happened it was time to replace the washer but most people didn't and continued to apply more twisting force to obtain a complete drip stop. As I stated earlier, washer-less faucets are manufactured to be turned on and off with very little resistance so all the extra seals, brass and steel aren't necessary to make a good product. All of the remaining faucets in my house are washer-less. All but three are Delta and that is another story as to why they are another brand. I have replaced washer-less components in the three that aren't Delta five times since they were installed. In over thirty-three years not one of the Delta faucets has ever leaked. If one of the Delta faucets starts leaking I know I will be able to purchase a replacement part instead of a new faucet. Over forty-five years ago a plumber told me to by only Delta and if something malfunctioned I would either be able to find a part to fix the problem or Delta would replace it. So far not one Delta faucet is dripping or spewing.
Date published: 2018-10-19
Rated 5 out of 5 by from Best faucet I’ve ever bought I bought this faucet less than a month ago and I just love it. The handles are easy to turn, I love how it looks on my sink and overall it is the best faucet I’ve ever bought
Date published: 2018-09-24
Rated 4 out of 5 by from Good looks I get compliments on this faucet. It wasn't very expensive but looks like it is
Date published: 2018-09-11
Rated 5 out of 5 by from RV Faucet Replacement Bought this to replace the cheap plastic one in my RV kitchen...… love it.
Date published: 2018-09-10
Rated 5 out of 5 by from Easy to install! I like it because it does NOT have Ceramic cartridges and the cost of replacing bad cartridges is Much more reasonable!
Date published: 2018-08-31
Rated 5 out of 5 by from Beautiful I bought this a couple of years ago, and the sprayer started leaking almost immediately. Delta replaced it, without question, even more than a year later. The service was great and the replacement arrived within days. The new sprayer, so far, works great, with no leaks. This set looks great. I just wanted something different than chrome.
Date published: 2018-08-28
Rated 5 out of 5 by from Works really well. My plumber bought this and installed it last week. I am enjoying it, especially the sprayer.
Date published: 2018-08-25
Rated 3 out of 5 by from Sprayer started leaking after 3 days Sprayer started leaking after using cold water through the spout. Spout also seems rather loose where it threads into the base. Faucet is also very light weight and I'm not sure how long it will last.
Date published: 2018-08-04
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Can I hook up a portable dishwasher to this faucet?

Asked by: Suzi
Thank you for your question, Suzi! You may connect a portable dishwasher to the spout using the right adapter. We do not make an adapter for this faucet, but the thread size of the spout is 55/64"-27 male. Best regards, Jon
Answered by: DeltaFaucet3
Date published: 2018-10-17

Model # 21988LF. The base is leaking. What repair kit do I need? Is there a video I can watch to help me repair.

Asked by: AD123
Hi, AD123. Thank you for your question, and I am sorry to hear that you are experiencing an issue with your Delta 21988LF faucet. The part number for the o-ring repair kit is RP41700. We do not have a video to show the repair for this but here is a link to the manual for the faucet: https://media.deltafaucet.com/MandI/86377%20Rev%20B.pdf Please contact us back if you should need further assistance with this. Best Regards, Rosanna
Answered by: DeltaFaucet11
Date published: 2018-10-09

What is the repair kit number to fix a dripping faucet? Is it kit rp54801 or rp41700?

Asked by: Kdo2
Hi, Kdo2! Thank you for your question. The Delta 21988LF-SS uses RP54801 repair kit. Best Regards, Rosanna
Answered by: DeltaFaucet11
Date published: 2018-09-28

Howdy, Are the spout, handles, & base of this faucet made of brass, or is the finish applied to a different base metal? I've read that the sprayer is plastic, but is the rest of the faucet all metal? Much obliged, Matt

Asked by: tomhorn1913
(Foundations 21988LF) -The spout and handles are NOT internally metal, but instead plastic. This was confirmed to me by a Delta phone representative.
Answered by: Lisa
Date published: 2018-08-13

Is a replacement base & handles available for the Foundations 21988LF-OB faucet

Asked by: Kenn
Hello Kenn, Thank you for your inquiry! The handles (RP42995OB) of the Delta Foundations Kitchen 21988LF-OB faucet are replaceable parts. Unfortunately, the escutcheon/base plate is not sold separately from the valve body. Please see the below Parts Diagram, for this model. https://media.deltafaucet.com/PartsDiagram/DPD-K-21987LF.pdf Best regards, Tanya
Answered by: Delta Faucet
Date published: 2018-07-05

My side sprayer split in the seam Oild Bronze not available?

Asked by: Sbt521
Hi, Sbt521! Thank you for your question. The 21988LF-OB sprayer assembly is available. The part number is RP54807OB. Here is a link to the part: https://www.deltafaucet.com/parts-product-detail?modelNumber=RP54807OB You can usually find Delta faucet parts at any dealer that sells Delta faucets. Some good places to check can be found on our website under Where To Buy. http://www.deltafaucet.com/where-to-buy/index.html To order parts directly from Delta, you may call the toll-free Delta Help Line at 1-800-345-3358. We accept Visa or MasterCard for parts orders over the telephone. Best Regards, Rosanna
Answered by: DeltaFaucet11
Date published: 2018-05-11

Can we replace the 8" spout with a 12" or taller. Please provide part number(s). Thanks John

Asked by: John646
Hi, John646! Thank you for your question. We do not have a replaceable 12" spout for this faucet. I do apologize for any inconvenience this may cause. Best Regards, Rosanna
Answered by: DeltaFaucet11
Date published: 2018-03-27

What kind of adapter would I need to attach a portable dishwasher hose? it's to small for the tip and when I unscrew it it's too big. can't seem to find the right size. Any help is appreciated

Asked by: theopholismmviii
Hello, Theopholismmviii! Thank you for your question. The Delta Foundations Kitchen 21988LF-SS faucet has an aerator with a thread size of 55/64"-27. You will need to talk to your local retailer or wholesaler about getting an adapter that fits your portable dishwasher to also fit the faucet thread size. We do not manufacture any adapters for attaching dishwashers or filters. Best regards, Tanya
Answered by: Tanya
Date published: 2018-02-24
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