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iconian | Staff 43.7K Views
Feb 21, 2026 3:37 PM

2-Pack 2" x 39" GroTheory Under Door Draft Stoppers (White)

$6.00

$14

57% off
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Deal Details
This popular Frontpage deal is available again with a new promo code.

Grotheory US via Amazon has 2-Pack 2" x 39" GroTheory Under Door Draft Stoppers (White) for $8.52 - $2.53 when you apply promo code XLIMHJQX at checkout = $5.99. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Editor iconian for sharing this deal.

Note: Promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.

Editor's Notes

Written by persian_mafia | Staff
  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this store:
Expired promo code:
  • ESHYDEY5

Original Post

Written by iconian | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
This popular Frontpage deal is available again with a new promo code.

Grotheory US via Amazon has 2-Pack 2" x 39" GroTheory Under Door Draft Stoppers (White) for $8.52 - $2.53 when you apply promo code XLIMHJQX at checkout = $5.99. Shipping is free w/ Prime or on $35+ orders.

Thanks to Deal Editor iconian for sharing this deal.

Note: Promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.

Editor's Notes

Written by persian_mafia | Staff
  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this store:
Expired promo code:
  • ESHYDEY5

Original Post

Written by iconian | Staff

Community Voting

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Top Comments

maveni4554
78Comments
38Reputation
Just installed 5 of these in my house and I was surprised at how well they work. I worked as a carpenter years back and have installed the traditional screwed in door sweeps with the metal base and rubber sweep so I didn't expect much from these but honestly for the price I would recommend them. They're also incredibly easy to install so no carpentry skill is necessary to install. Just something to mark the length you want it and then scissors to cut the rubber. Then slap it on using the attached 3m tape while running your finger and making sure there are no gaps at the bottom.

I should say these are for INTERIOR doors. I don't think they would last or stay on exterior doors well at all.
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SharpDime5530
31Comments
10Reputation
I installed another brand of this same product on the door to my laundry room. It's a significant reduction in noise transmission.
Go to Comment

Community Reviews

This under door draft stopper is a simple interior door seal that blocks drafts and cuts noise, with several installs described as effective on basement, laundry room, and other indoor doors. Installation is straightforward, since it can be measured, cut with scissors, and stuck on with the included 3M tape, and the coupon appears to work on multiple sets. The main caveat is adhesion, which is described as weak on some doors and may need extra tape or a screwed in strip. It also arrives rolled up and is not a good fit for exterior doors.

Common Questions (5)

  • Yes, it is suggested for interior basement doors, doors to attached garages, stairwell doors, storage rooms, and other unheated spaces. It is meant to block drafts while still allowing some air circulation and ventilation.

    adaltaKHaggertyDealerandWheelerhindolam

  • It works well on interior doors and is easy to install with the included 3M tape, but it is not a good fit for exterior doors. The adhesive and hold are reported to be too weak for exterior use, while it stays on and seals well indoors.

    maveni4554skwishbotFeistyMallard7178

  • Yes. The coupon scales with quantity, so ordering 2 or more can apply the discount to multiple sets, and the order may also qualify for no-rush shipping credit when available.

    Splash15Splash15kittielover

  • It can noticeably cut sound transmission, especially through small bottom gaps under doors. One installation on a laundry room door was described as a significant reduction in noise, and even a half-inch gap can let through a surprising amount of sound.

    bradmurraySharpDime5530Hotpuck6

  • The adhesive is often reported as weak and may need reinforcement. Some users add extra tape or use a screwed-in metal strip to keep it in place, especially on doors that get more wear.

    skwishbotPurpleMoney7250Mark34204

AI-generated summary based on comments from the community. Updated ago

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51 Comments

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Feb 21, 2026 10:07 PM
1.3K Comments
Joined Jan 2008
adaltaFeb 21, 2026 10:07 PM
1.3K Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from cliqstr View quoted comment :
Probably means the interior side of an exterior door.
I'd also use it for doors for rooms that aren't heated. Garage door, maybe storage rooms, large unheated closets.
1
Feb 22, 2026 1:48 AM
31 Comments
Joined Nov 2020
SharpDime5530Feb 22, 2026 1:48 AM
31 Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from geoffkin View quoted comment :
I'm not concerned about drafts on interior doors, but how would these work for SOUND?
I installed another brand of this same product on the door to my laundry room. It's a significant reduction in noise transmission.
4
Feb 22, 2026 4:04 AM
40 Comments
Joined Aug 2016
iggysmalls86Feb 22, 2026 4:04 AM
40 Comments
In for 2 sets!
Feb 22, 2026 5:19 AM
385 Comments
Joined Sep 2019
sleekdillsFeb 22, 2026 5:19 AM
385 Comments
are the glues strong enough
Feb 22, 2026 8:53 AM
250 Comments
Joined Aug 2012
willshiFeb 22, 2026 8:53 AM
250 Comments
Quote from geoffkin View quoted comment :
So you got it for $3 yesterday?
Continue to polish your math skills. Simply look at graph above.
Feb 22, 2026 6:47 PM
4.9K Comments
Joined Jan 2007
geoffkinFeb 22, 2026 6:47 PM
4.9K Comments
Quote from willshi View quoted comment :
Continue to polish your math skills. Simply look at graph above.
My math skills are just fine. Even if you believe those SD charts, it shows they were over $4 not $3, so $6 ain't 50% less..
Feb 22, 2026 7:49 PM
101 Comments
Joined Sep 2017
foodie12345Feb 22, 2026 7:49 PM
101 Comments
In for 1. thanks!

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Feb 22, 2026 8:30 PM
15 Comments
Joined Mar 2011
clos3casFeb 22, 2026 8:30 PM
15 Comments
In for one, thanks
Feb 22, 2026 11:18 PM
7K Comments
Joined Jul 2007
skwishbotFeb 22, 2026 11:18 PM
7K Comments
the adhesive on these never holds up.
Feb 22, 2026 11:55 PM
55 Comments
Joined Dec 2018
KHaggertyFeb 22, 2026 11:55 PM
55 Comments
Quote from DrewBreeze13 View quoted comment :
What would be the benefit of using them on anything but an exterior door?
I'm going to use it on my interior basement door, maybe also good for a door to an attached garage.
Last edited by KHaggerty February 22, 2026 at 03:58 PM.
1
Feb 23, 2026 1:51 PM
1.1K Comments
Joined Apr 2009
Hotpuck6Feb 23, 2026 1:51 PM
1.1K Comments
Quote from geoffkin View quoted comment :
I'm not concerned about drafts on interior doors, but how would these work for SOUND?
I have a similar one on one of my doors and it works great. You would be shocked how much sound comes through like a half inch gap at the bottom of a door.
Feb 23, 2026 6:19 PM
44 Comments
Joined Sep 2018
beauxeaultFeb 23, 2026 6:19 PM
44 Comments
Quote from geoffkin View quoted comment :
My math skills are just fine. Even if you believe those SD charts, it shows they were over $4 not $3, so $6 ain't 50% less..
No, but $6 is 50% more than $4. Which is what the OP said.
1
Feb 24, 2026 4:18 AM
281 Comments
Joined Nov 2019
PurpleMoney7250Feb 24, 2026 4:18 AM
281 Comments
I add additional tape to these once installed for better adhesion
Feb 25, 2026 6:46 PM
741 Comments
Joined Dec 2010
kittieloverFeb 25, 2026 6:46 PM
741 Comments
I tried all your suggestions, & this is what I get:
  • $8.52
  • Shipping & handling:
    $9.99 FREE
  • Promotion Applied:
    -$0.43
  • Estimated tax to be collected:
    $0.68
  • Order total:
    $8.77
  • It said I qualify for the promo, yet {for some reason}, it gives me 5% off.

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Feb 27, 2026 5:16 PM
3 Comments
Joined Jul 2019
SIRSE7ENFeb 27, 2026 5:16 PM
3 Comments
Quote from kittielover View quoted comment :
I tried all your suggestions, & this is what I get:
  • $8.52
  • Shipping & handling:
    $9.99 FREE
  • Promotion Applied:
    -$0.43
  • Estimated tax to be collected:
    $0.68
  • Order total:
    $8.77
  • It said I qualify for the promo, yet {for some reason}, it gives me 5% off.
me too
šŸ˜’

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