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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.
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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)

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

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51 Comments

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Feb 28, 2026 6:11 AM
741 Comments
Joined Dec 2010
kittieloverFeb 28, 2026 6:11 AM
741 Comments
Quote from SIRSE7EN View quoted comment :
me too
😒
it just worked:
  • Items:
    $8.52
  • Shipping & handling:
    $9.99 FREE
  • Promotion Applied:
    -$2.53
  • Estimated tax to be collected:
    $0.50
  • Order total:
    $6.49
Works on multiples:
  • Items (2):
    $17.04
  • Shipping & handling:
    $9.99 FREE
  • Promotion Applied:
    -$5.06
  • Estimated tax to be collected:
    $1.00
  • Order total:
    $12.98
Last edited by kittielover February 27, 2026 at 10:19 PM.
Pro
Sr. Deal Editor
Mar 13, 2026 2:09 PM
35.6K Comments
Joined Nov 2004
persian_mafiaMar 13, 2026 2:09 PM
Pro
Sr. Deal Editor
35.6K Comments
This deal is working again. New code is XLIMHJQX
Mar 13, 2026 2:20 PM
301 Comments
Joined Nov 2009
DealsWithIt20Mar 13, 2026 2:20 PM
301 Comments
Aren't door gaps important for HVAC systems for homes that have central air? Air needs to be able to move in and out of rooms or it can lead to uneven cooling/heating and wear on the system/increased energy bills.
Mar 13, 2026 2:21 PM
109 Comments
Joined May 2022
SeriousSofa638Mar 13, 2026 2:21 PM
109 Comments
Looking from the purchase history, the last time I bought this (probably comes from SD) as well are $5.30 in 2023. Tariff + Inflation on this item is about 0.7(13.2%).
Mar 13, 2026 2:38 PM
3 Comments
Joined Sep 2020
Kennyea7Mar 13, 2026 2:38 PM
3 Comments
Anybody know if this helps block out some sound as well?
Mar 13, 2026 2:53 PM
1.6K Comments
Joined Oct 2004
washerebeforeMar 13, 2026 2:53 PM
1.6K Comments
Theory Under Door
1
Mar 13, 2026 3:08 PM
12 Comments
Joined Jul 2018
Alex_ZMar 13, 2026 3:08 PM
12 Comments
Can you paint these to match the color of the door you're putting them on?

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Mar 13, 2026 3:12 PM
155 Comments
Joined Mar 2019
Mark34204Mar 13, 2026 3:12 PM
155 Comments
I installed this on my interior basement door. The adhesive is pretty useless so I used a screwed in metal strip to hold it in place. Worked great until the cats discovered it. It took a couple months, but they shredded all of it into tiny pieces. The silicone material must feel good on their claws. I bought a replacement but I'm not going to bother.
Last edited by Mark34204 March 13, 2026 at 08:20 AM.
Mar 13, 2026 3:20 PM
155 Comments
Joined Mar 2019
Mark34204Mar 13, 2026 3:20 PM
155 Comments
Quote from Alex_Z View quoted comment :
Can you paint these to match the color of the door you're putting them on?
The ones I have appear to be made of silicone rubber which does not hold paint well.
Mar 13, 2026 3:42 PM
2.3K Comments
Joined Nov 2003
EmiMar 13, 2026 3:42 PM
2.3K Comments
Quote from geoffkin View quoted comment :
I'm not concerned about drafts on interior doors, but how would these work for SOUND?
they would swoosh.
Mar 13, 2026 3:57 PM
2.6K Comments
Joined Oct 2007
hpdadMar 13, 2026 3:57 PM
2.6K Comments
....................
Mar 13, 2026 4:07 PM
9 Comments
Joined Apr 2017
EggosMar 13, 2026 4:07 PM
9 Comments
Thanks for the great deal.
Mar 13, 2026 4:28 PM
51 Comments
Joined Sep 2004
grantlandMar 13, 2026 4:28 PM
51 Comments
They come rolled up so they don't really install looking straight
Mar 13, 2026 5:07 PM
8.1K Comments
Joined Aug 2011
johnnybladesMar 13, 2026 5:07 PM
8.1K Comments
Quote from Mark34204 View quoted comment :
I installed this on my interior basement door. The adhesive is pretty useless so I used a screwed in metal strip to hold it in place. Worked great until the cats discovered it. It took a couple months, but they shredded all of it into tiny pieces. The silicone material must feel good on their claws. I bought a replacement but I'm not going to bother.
damn cats.
as a owner of 5 cats, thanks for heads up.
can't have anything nice...

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Mar 15, 2026 1:24 PM
36 Comments
Joined Sep 2013
DealerandWheelerMar 15, 2026 1:24 PM
36 Comments
Quote from DrewBreeze13 View quoted comment :
What would be the benefit of using them on anything but an exterior door?
I have an interior door that opens to a staircase that leads to a garage where cold drafts can make their way through. We have something similar on our door but I kind of hate it and need to figure something better out. Mine is a heavier duty foam, not rubber so maybe this would be better.
1

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