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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20 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)

20 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: 498992628

Details

Brand
Fingwerk
Color
Black
Item Thickness
0.23 inches
Material
Rubber
Product Dimensions
0.35"W

📏20 feet length for full coverage

❄️Flexible rubber resists extreme temps

🛠️Self-adhesive backing for easy install

¥5873

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Description

🚪 Seal the deal on comfort and savings—don’t let drafts crash your vibe!

STICK STAY POWER - 3M self-adhesive backing ensures a rock-solid hold that won’t peel off, even in harsh weather.
CUT TO FIT NO FUSS - Easily trim with scissors or a utility knife for a perfect custom fit on any door or window frame.
MULTI PURPOSE MAGIC - Ideal for doors, windows, electrical cabinets, speakers, and more—upgrade your entire space effortlessly.
WEATHERPROOF YOUR SPACE - Flexible rubber won’t crack or freeze, keeping your home cozy and protected year-round.
SEAL EVERY GAP LIKE A PRO - 20 feet of premium D-shape rubber fits gaps from 2.5 to 5.5 mm for airtight insulation.

The Fingwerk 20 Feet Rubber Weather Stripping Door Seal Strip features a durable D-shaped rubber profile with a 3M self-adhesive backing, designed to seal gaps from 2.5 to 5.5 mm. Its flexible material resists cracking and freezing in extreme temperatures, making it perfect for insulating doors, windows, and more. Easy to cut and install, this weather stripping enhances energy efficiency and noise reduction, delivering professional-grade insulation for your home or office.

Specifications

ASIN	B0BLTNL21B
Best Sellers Rank	#2,832 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Weather Stripping
Brand Name	Fingwerk
Color	Black
Customer Reviews	4.2 4.2 out of 5 stars (2,818)
Included Components	3M adhesive tape
Item Dimensions L x W	0.35"W
Item Thickness	0.23 inches
Item Type Name	Rubber Weather Stripping
Manufacturer	Fingwerk
Material Type	Rubber
Model Number	FD20
Number of Items	1
Recommended Uses For Product	Door, Electrical cabinets, Window
Unit Count	20 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

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

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

2 weeks ago

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¥5873

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

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Anjali K.

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

1 month ago

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