What size/width slot is required for pushing the plastic edge into?

Not sure what width you are asking about. If you are talking about the channel it goes into it is pretty much standard size which is a groove you press the flange into. The only width/gap you need to make sure of is the door to the frame which is about 5/8. Close your door and measure the spacing. I used this to replace the original of 37 years old and it fit like a charm. Very satisfied, looks good and will stop any air leaks. Hope this helps.

The groove you press the flange into should be installed first, because regular doors do not have it, right?

Actually our door had a groove and we just replaced the old stripping that the cats had shredded. Easy and worked great

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🛠️ Seal smart, live cozy — don’t let gaps steal your comfort!

MULTI PURPOSE SHIELD - Blocks wind, dust, noise, and cold while protecting door frames and reducing wear.
CUT TO FIT YOUR SPACE - Customizable with scissors or cutters for a perfect, tailored seal every time.
STICK SEAL IN MINUTES - Strong self-adhesive backing ensures a secure, long-lasting hold without messy tools.
WEATHERPROOF RESILIENT - Flexible rubber material stays intact without cracking or freezing, even in extreme temperatures.
SEAL EVERY GAP LIKE A PRO - 40 feet of premium D-shaped rubber strip covers large door and window gaps effortlessly.

This 40-foot black D-shaped rubber weatherstrip from Fingwerk offers a versatile, easy-to-install solution for sealing door and window gaps between 2.5 to 5.5mm. Its self-adhesive backing guarantees a firm hold, while the flexible, weather-resistant material prevents drafts, dust, noise, and temperature loss, enhancing home comfort and energy efficiency.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Brand	Fingwerk
Product Dimensions	1219.2 x 0.89 x 0.1 cm; 381 g
Color	ブラックD型。
Material	ゴム
Item Weight	381 g

40フィートウェザーストリップドアシールストリップ自己粘着バッキング D型ゴム製ウェザーストリップドアフレーム用大きな隙間用サイズに簡単にカットできます(ブラック)

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40フィート ウェザーストリップ ドアシールストリップ 自己粘着バッキング D型 ゴム製ウェザーストリップ ドアフレーム用 大きな隙間用 サイズに簡単にカットできます(ブラック)

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Common Questions

40フィートウェザーストリップドアシールストリップ自己粘着バッキング D型ゴム製ウェザーストリップドアフレーム用大きな隙間用サイズに簡単にカットできます(ブラック)