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Radon Mitigation Basin Cover

  • Compatible for use with any 18 - 24 in. opening
  • Heavy-duty construction for durability
  • Includes flange, cord grommet, side hub, reducer plate, template
  • See More Details

Frequently Bought Together


Product Overview

The Everbilt Radon Mitigation Basin Cover serves two pressing needs; the need for a universal gas-tight cover to serve the radon mitigation market and the need for a cover to retrofit failing sump and sewage basin covers. The Everbilt Radon Mitigation Basin Cover is designed to cover an existing basin, providing a new heavy duty cover to properly contain and vent radon gas and odors. There is no reason to dig up your basement or garage floor to remove the existing sump or sewage basin. Simply remove old cover and install the Everbilt Radon Mitigation Basin Cover over the opening, to create a new, sealed system. The Everbilt Radon Mitigation Basin Cover is adaptable with a variety of spaces for different connections and comes with a full range of flanges that fit every size pipe. The removable cover allows for easy access to the pump and has a clear view removable inspection plate.
  • Contains and properly vents radon gas and odors
  • Fits over any 18 in. 24 in. opening
  • Retro fit old, failing covers
  • Provides safety for children and pets
  • Features a clear view removable inspection plate
  • Comes with the following fittings: 1-1/4 in. flange, 1-1/2 in. flange, 2 in. flange, 2 in. vent flange, 3 in. vent flange, cord grommet, 1-1/4 in. side hub,1-1/2 in. side hub, 2 in. side hub, blank/solid flange, 1-1/4 in. reducer plate and a drill template
  • Features 5 side locations for inlets, discharge or vents
  • Has a built in floor drain plug
  • Heavy duty structural foam injection molded construction
  • Supports 1,000 lbs.
  • Easy to install

Info & Guides

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Product Depth (in.)
28 in
Product Height (in.)
4 in
Product Width (in.)
28 in


Brand Compatibility
Works with all sump and sewage basins up to 24 in. diameter
Pack Size
Product Weight (lb.)
12 lb

Warranty / Certifications

Manufacturer Warranty
Warranted to the original consumer purchaser to be free from defects in material and workmanship for a period of one-year from the date of purchase.

Questions & Answers


My sump pit is in an enclosure. Do I need to screw it into the concrete or just caulk with adhesive would work.

Asked by ED June 12, 2021

Hi Ed. We strongly recommend securing the riser to the concrete floor with tap con screws for safety. Our internal testing has demonstrated that sealing the cover to a concrete floor does provide a gas tight seal.


Asked by Bill June 2, 2021

Hi Bill. Please call us, 877-297-6069 and ask for Steve. He will be able to assist you.

i have two 1 1/2" pipes, looks like cover has 2 different size holes?

Asked by dan February 1, 2021

The larger hole in the picture is a 3inch opening for a radon exhaust fan. If you won't be using that feature, you could repurpose that hole for your 2nd 1.5in pipe. The kit comes with multiple adapter plates and covers that you could probably swap out the 3in threaded plate for something you could use.

Does this come with tap con or concrete screws, if not what should I use and how many?

Asked by Steve December 19, 2020

No included concrete screws. You’ll need pan head/hex head screws. It’s maybe 10-12 screws. You will also likely need silicone caulk.

Will this help lower radon if its kept sealed and without installing a radon fan?

Asked by Jack October 22, 2020

It's best to use a fan but the sealed cover will help lower Radon emissions just as sealing all cracks in the floor and around the walls.

So, I have a sump pump and back up sump pump already installed and would like to replace the sump...

Asked by FSH October 11, 2020

Yes. I installed mine in a similar way. Since I was replacing the pump itself, I used brand new pipes. Nevertheless, I still needed to use coupling fittings to attach the pipes to the existing plumbing. The pipes and the sump pump wire have to run through their respective holes in the lid before it is permanently attached to the floor.

i have ceramic tile on the basement floor and i really don't want to burn out my drill and severa...

Asked by dchandyman September 15, 2020

Hello dchandyman. Thanks for the question. Many folks have had success using caulk to adhere the bottom ring to the floor without anchors.

Once sealed are you able to remove and reuse cover to get access to sump pit or to replace sump pump?

Asked by CM April 17, 2020

You can, you just need to plan ahead for your install. On my drain pipe, I have a 45 elbow just above the lid that I left unglued and installed a rubber coupler a few feet higher so I can remove that section and allow the lid to be completely removed if needed. Pipes you don't plan on moving could be routed through the sides of the ring and caulked in place.

This cover looks identical to the Jackel smr16101-cv and the images do show the brand name Jackel...

Asked by HandymanJoe January 25, 2020

Hi Joe. The Everbilt Radon Mitigation Basin Cover is proudly made for The Home Depot by Jackel at our Mishawaka, Indiana factory.

How does one know what sump this will fit and lock onto?

Asked by DTD January 11, 2020

This should fit any sump but I don't think it "locks" on. The water pipe and Radon Pipe come out of the top.

Radon Mitigation Basin Cover - page 2

Customer Reviews

  • 4.7
    out of 134 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 134 reviews
After doing a 3 month text last year that resulted in a score of 5.9, it was time to do something. First thing was to buy a meter, this was the second. The meter showed 6.0 when it was placed in the basement. The install of the cover was fairly easy for a do-it-yourselfer. 25 years of gunk in the pit was the worst part of the project. After that its just a matter of lining up the pump with the cover and piping. Drew a few lines on the floor replaced the cover drilled one hole into the floor placed a nail in it, then drilled another on the other side and pinned it. This way the cover doesn't move while I drilled the others. Next remove the cover clean off the dust, 2 tubes of caulk just inside the holes. Replace the pump run the lines threw the cover set the cover and screw it down. What amazed me was the amount of draft that comes through that pit. I just vented the pit outside as a passive system no fan. The meter I purchased does a daily weekly and a 6 month readout. Since the install the reading on the meter have fallen from 6.0 to 2.24 for the last 2 months. The daily reading have gone from 0.48 to 2.65.
by MattF
Response from JackelMar 10, 2021
Hello MattF. Thank you for the 5 Star Review and kind words. We are thrilled that you found such success with this product! Jackel
1 person found this helpful
Looks great, functions awesome! Definitely worth it
Looks great, functions awesome! Definitely worth it
by Pope
Response from JackelJul 9, 2020
Hi Pope. Thank you for the 5 Star Review and kind words. We really appreciate it! Jackel
What I've been looking for
I've been a home builder for over 40 years and have never cared for the end result of our sump pump installations. Lately, we also have to be concerned about radon and the sump crock is most likely a big source of it. This lid is the answer. It provides a safe covering for the crock and it seals tightly to stop radon infiltration. It has a fitting for a 3 inch pipe to hook up to a radon mitigation system if needed and it comes with multiple fittings for several different size pipes for discharge and venting. It makes for a very professional looking installation. I particularly like the window in the lid to check on the pump. A great product.
by MR
After years of needing covers finally found these and for price worked great on my sump pits
After years of needing covers finally found these and for price worked great on my sump pits
by Eagle76
Response from JackelJun 2, 2020
Hello Eagle76. Thank you for the 5 Star Review and kind words. We really appreciate it. Jackel
Easy to install. I have used these at least 10 times before, as I do handyman work, and these are...
Easy to install. I have used these at least 10 times before, as I do handyman work, and these are used for mitigating radon, or part of the system. A hammer drill, caulk and impact driver.. wish it came with Tapcon style fasteners.. other then that, it's set for many applications. Would recommend this product!!
by jeff
Response from JackelDec 27, 2019
HI jeff. Thank you for the 5 Star Review and kind words. We really appreciate it! Jackel
The cover on my basement sewage pit has never been securely attached and sealed since I bought th...
The cover on my basement sewage pit has never been securely attached and sealed since I bought the house 5 years ago. It sat pretty snugly over the cast iron pit so it was never my highest priority as it seemed to keep all the odors out of the basement even though the bolts had been snapped off, probably due them rusting out then shearing when some maintenance was done to the pump. So when the ejector pump's float switch started sticking and I had to do battle in the pit anyway I went looking for a solution to the cover issue and found this product. As it luckily happened, the original cover was made by the same company, and despite being 25 years old all the pipes lined up exactly with the holes in the new cover. Sometimes you win one. Installation was relatively easy. The instructions are pretty much useless, having very little detail. But that being said, if you are a competent D.I.Y. type it's mostly just thinking it over and figuring it out. They supply a slew of different parts and adapters, so you can almost certainly McGuyver it up with the supplied goods. A few hints might be helpful for you if you're planning on installing one of these things. 1) Loosely attach the cover to the base then dry fit it all together over the pit so that the cover will fit on the base with all the holes lined up. Once it all lines up on the money attach the base to the floor with Tapcon screws and silicon. 2) I saw a number of reviews where people had a hard time attaching the cover to the base, both lining up the gasket and getting the cover screws into the base without knocking out the retaining nuts into the pit. One good tip in the instructions is to put the screws into the cover holes, then putting the gasket on the screws. Then you just carefully place the cover on the base while paying close attention to lining up the bolts. Use a nut driver to slowly and carefully make sure the nuts and bolts line up, taking care to not cross thread them. Get all of them started, then tighten them down in a star pattern like you were changing a tire. Mine all went in with no problem. 3) There's an extra 1" or so hole in the side of the base that I didn't see mentioned in the instructions. I didn't need it for whatever it's for, so I just took a used gift card and silicon-ed it to the inside of the cover, then used a fender washer and a stainless screw to pull it tight. Worked great. So overall I'm very happy with the product and result. I's buy it again.
by Ran
Response from JackelOct 22, 2019
Hello Ranman. Thank you very much for this excellent and very well worded review. We really appreciate the time you took to write this. We are taking your constructive criticism to heart and will update the installation instructions as you suggested. Once again thank you! Jackel
I found this Radon Mitigation Basin Cover simple to Install, everything you need is in the box ex...
I found this Radon Mitigation Basin Cover simple to Install, everything you need is in the box except your PVC fittings, glue and cleaner. I have had it installed less than one week and it meets all my expectations. It took less than three hours to Install and if I had to do another one it would take about two hours. Instructions were very clear and easy to follow and I would advise to read the Instructions several times so you clearly understand what you are doing and buy the correct size hole saws and concrete drill bits. The features that stand out the most is that it is well made by a reputable company and very strong an durable.
Response from JackelJan 15, 2019
Hello RUMMY. Thank you very much for such a great review! We really appreciate your kind words! Jackel
I discovered we had high levels of radon in our new home and needed to take steps at remediation....
I discovered we had high levels of radon in our new home and needed to take steps at remediation. My first step was sealing the sumo pit. The cheap builder cover just prevented someone from accidentally failing into the pit. This one seals it tight! It comes with a wide variety of gaskets to adapt to tons of potential pipe/plumbing scenarios. A feature I really appreciate is the little window so I can look into the pit to see what's going on without having to unscrew the lid. Installation was easy and only took about an hour. I used silicone and Tapcon concrete screws to permanently install it and it works great!
by TheQueensGardener
Response from JackelJul 26, 2018
Hello TheQueensGardener. Thank you for the great review! We really appreciate your business and your kind words. Jackel
3 people found this helpful
About 30 years ago I had my home tested for Radon with a carbon canister home test. The results c...
About 30 years ago I had my home tested for Radon with a carbon canister home test. The results came back showing negligible Radon levels so I did nothing about it. Last winter, after an impulse purchase of an electronic Radon monitor, I was surprised to find the Radon levels in my home well above the recommended maximum levels recommended by the EPA. I had a Radon Mitigation contractor give me a quote for a removal system and was quoted a total cost of $1050.00. This price seemed reasonable but after a close examination of the proposal I was not happy. The contractor wanted to put in a very cheap submersible sump pump, build a custom clear Lexan cover, and seal it all more or less permanently. This would make access to the sump pump difficult at best. I wanted a system that made access to the sump pump at least possible. So I searched for Radon mitigation sump pump cover and found the “Everbilt Radon Mitigation Basin Cover” After considerable research, I found a very high quality submersible sump pump, Radon mitigation fan and purchased the cover and PVC piping and fittings to complete the job. As the winter turned to spring, I noticed that the Radon levels in my house started to drop. The levels were still greater than recommended but about half what they were in the winter. I wasn’t sure what caused this, but later I think I found out why. Since you need to attach the cover riser to the floor with 12 concrete screws, you have to disconnect your current sump pump to prevent the discharge pipe from blocking the cover riser from around the sump. Since we had a rainy spring I decided to install the new sump pump. The directions suggested that you clear out the sump of sand and pebbles before installing the new pump. To get the sump dry I ran the old pedestal sump pump past its normal shut off point, then used a shopvac to pick up the pebbles and sand in the sump. The next day, the Radon level in my house shot up and more than doubled overnight. This gave me a clue to the source of the Radon. My sump is supplied by two 4 inch pipes. One of the pipes is much lower than the other one in the sump. The lower pipe is always totally under water before the pump turns on. It appeared to me by exposing this pipe to air by draining the sump, I allowed the normally underwater low pipe to discharge Radon into the house. This also explains why the Radon level was so much higher in the winter. We had a relatively dry winter that allowed the water in the sump to evaporate and be lower than normal. In the spring, rains re-filled the sump slowing the Radon from the low pipe. As I said, you need to drill 12 holes in the floor to mount the cover riser to the floor. The concrete screw instructions suggest that you use a hammer drill to make these holes. I didn’t have a hammer drill but found that I could do an acceptable job using an ordinary drill. The bottom of the cover riser is caulked and it was easy to screw it to the floor. The only mistake you could make here is to position the drain plug position incorrectly. There is a rubber gasket supplied for the seal between the cover riser and cover. The gasket seemed kind of floppy and I wasn’t sure it would be fully over the cover riser between the 8 bolts. So I rubber cemented this gasket to the cover riser to ensure it did not slip too close to the edge and fail to seal. Once you have put in a few bolts you have no ability to make adjustments to the gasket. Installing the cover bolts was my only glitch. The nuts for the cover bolts in the cover riser appear to be part of the cover riser. In fact, they are separate nuts press fitted into square holes in the cover riser. While installing an early bolt, I pressed too hard on the bolt sending the nut to the bottom of the sump. Luckily, they supply a lot of extra parts and I was able to replace the lost nut. I was very careful after that to start the bolts very gently by hand tightening until I was sure the threads had caught. You can’t leave out a bolt or there will be a hole in the seal. The fact that the cover is symmetric gives you eight options for the pipe placement. The rest of the installation mostly involved standard PVC piping. My new sump pump has two cords, one for the pump and the other for the float switch. The grommet supplied with Everbilt cover is set up for only one cord but it was easy to cut a slit with a razor blade into the grommet for a second cord. The total cost of this project was $539.97 for all material and electrical equipment. Once I turned on the Radon fan, after only two days the Radon level measured only 0.35 pc/l which is 11 times less than the EPA standard. I’m 75 years and found this to be a relatively easy project that I completed in a couple of days. I would not have started this project had I not found the Everbilt Radon Mitigation Basin Cover. Knowing what I know now, if I was starting this project over, I would have skipped the purchase of the Radon fan. Since it appeared that the source of the Radon was the discharge pipes in the sump, perhaps just installing a sealed cover would have been enough. If not, the fan could have been installed later. Everbilt supplies a cover to seal the vent pipe if desired. I could test this by turning off the Radon fan and monitoring the Radon levels. I am, needless to say, very pleased with the final results.
by Newt
Response from JackelMay 25, 2018
Hi Newt. Thanks for the excellent review. We really appreciate your thoughts and your business! Jackel
19 people found this helpful
Sturdy, good looking topper. I tapcon screwed, and siliconed it to directly into the floor. Witho...
Sturdy, good looking topper. I tapcon screwed, and siliconed it to directly into the floor. Without even installing the radon mitigation piping and fan, our basement radon levels dropped from 4.4 to 3.0 pCi/l. I have since installed the mitigation piping, and it was a breeze. The kit comes with extra bushings of all sizes so you can drill extra holes where needed. In may case, I drilled an extra 1 1/2" for a back up sump pump and there was a ready-made bushing seal included. One word of caution, I ordered a new Watchdog submersible pump because my old pump was a pedestal type; The pre-drilled hole for the wiring was not big enough to have the float from the new pump thread through it (I think this is particular to the WatchDog pump, other brands may work), so I had to drill another 1 1/2" hole to accept the float and its wire. The kit did not come with a good plug for a 1 1/2" hole, just the bushing mentioned above.
by MI
Response from JackelDec 21, 2017
Hi MI. Thanks for the review. We really appreciate your business. Jackel
2 people found this helpful
Showing 1-10 of 134 reviews