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

🖤Durable black rubber, flexible & weatherproof

🛠️Strong 3M self-adhesive backing, no tools needed

€ 26.28

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Description

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

MULTI PURPOSE EFFICIENCY - Ideal for doors, windows, cabinets, and more—reduce energy bills and protect your home in style.
WEATHERPROOF FLEXIBILITY - Resilient rubber won’t crack or freeze, ensuring year-round protection against drafts and noise.
CUSTOM FIT FOR YOUR SPACE - Easily cut and bend to any door or window shape for a seamless, professional finish.
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.
EFFORTLESS DIY INSTALLATION - Peel-and-stick 3M adhesive backing guarantees a firm hold without messy tools or hardware.

The Fingwerk 20 Feet Rubber Weather Stripping Door Seal Strip offers a flexible, durable D-shaped rubber design with a strong 3M self-adhesive backing. Measuring 20 feet long and 0.35 inches wide, it fits gaps from 2.5 to 5.5 mm, providing effective insulation against wind, dust, noise, and temperature extremes. Easy to cut and install, it’s a versatile solution for enhancing home comfort and energy efficiency.

Specifications

ASIN	B0BLTNL21B
Best Sellers Rank	#5,417 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #35 in Weather Stripping
Brand Name	Fingwerk
Color	Black
Customer Reviews	4.2 4.2 out of 5 stars (2,778)
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
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

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

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€ 26.28

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

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TrustScore 4.5 | 7,300+ reviews

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