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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40 Feet Rubber Weather Stripping Door Seal Strip, Self-Adhesive Backing D-Shape Door Weatherstripping for Door Frame Insulation Large Gap, Easy Cut to Size(Black)

Product ID: 429773983

Details

Brand
Fingwerk
Color
Black
Item Thickness
0.23 inches
Material
Rubber Vinyl
Product Dimensions
480"L x 0.35"W

📏40 feet length for full coverage

❄️Flexible rubber resists extreme temps

🛠️Self-adhesive backing for easy install

¥7048

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚪 Seal smart, save energy, and stay cozy—your door’s new best friend!

CUSTOM FIT FOR YOUR SPACE - Easily cut and bend to any shape for a flawless, professional finish every time
VERSATILE USE BEYOND DOORS - Ideal for windows, cabinets, speakers, and more—upgrade your entire home’s comfort
BUILT TO BRAVE THE ELEMENTS - Durable rubber won’t crack or freeze, keeping your space insulated year-round
SEAL EVERY GAP WITH PRECISION - 40 feet of D-shaped rubber strip fits gaps from 2.5 to 5.5 mm perfectly
PEEL STICK AND SEAL IN MINUTES - Super-strong self-adhesive backing ensures hassle-free, no-tool installation

The Fingwerk 40 Feet Rubber Weather Stripping Door Seal Strip offers a flexible, durable D-shaped rubber design with a strong self-adhesive backing. Measuring 40 feet long and 0.35 inches wide, it fits gaps from 2.5 to 5.5 mm, providing effective insulation against drafts, dust, noise, and temperature extremes. Easy to cut and install, it’s perfect for doors, windows, and various household applications, ensuring enhanced comfort and energy savings.

Specifications

Asin	B09TRBV7G8
Best Sellers Rank	#9,000 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #76 in Weather Stripping
Brand Name	Fingwerk
Color	Black
Customer Reviews	4.2 4.2 out of 5 stars (2,851) 4.2 out of 5 stars
Item Dimensions L X W	480"L x 0.35"W
Item Thickness	0.23 inches
Manufacturer	Fingwerk
Material Type	Rubber, Vinyl
Number Of Items	1
Number Of Packs	1
Recommended Uses For Product	Window,Door
Unit Count	40 Feet

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

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¥7048

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Customer service was outstanding when I had questions about the product.

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