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

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

Product ID: 538667902

Details

Brand
Fingwerk
Colour
Black
Item thickness
6 Millimetres
Material
Rubber
Product dimensions
12.19L x 0.01W

📏40 ft length for full coverage

❄️Flexible rubber resists extreme temps

🛠️Self-adhesive backing for easy install

$108.81

Duties & taxes included

In stock

Sold byAmazon Northern Mariana IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚪 Seal the deal, save the chill — upgrade your space effortlessly!

STICK STAY POWER - Super strong 3M adhesive ensures a firm hold even in harsh weather
CUT TO FIT YOUR NEEDS - Easily trim with scissors or knife for a custom, seamless seal
WEATHERPROOF YOUR SPACE - Flexible, crack-resistant material blocks wind, dust, sound, and cold
VERSATILE MULTI PURPOSE - Ideal for doors, windows, cabinets, and more—upgrade your entire home
SEAL EVERY GAP WITH PRECISION - 40 feet of D-shape rubber fits gaps from 2.5 to 5.5 mm perfectly

The Fingwerk 40 Ft Weather Stripping Door Seal Strip offers a durable, flexible rubber barrier with a strong self-adhesive backing, designed to seal gaps from 2.5 to 5.5 mm. Its 40-foot length and easy-to-cut design make it perfect for insulating doors and windows against drafts, dust, noise, and temperature extremes, ensuring enhanced comfort and energy efficiency in any home or office.

Specifications

ASIN	B09TRBV7G8
Brand	Fingwerk
Colour	Black
Customer Reviews	4.2 4.2 out of 5 stars (1,012)
Item Dimensions L x W	12.19L x 0.01W metres
Item Thickness	6 Millimetres
Manufacturer	Fingwerk
Material	Rubber
Number of Items	1
Recommended Uses For Product	Door,Window
Unit Count	1.0 count

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