Can't close the door if stripping is on the right side more than half way down. Installed properly. Why? If air still gets through what's the point?

If the door will not close then either the stripping, or something else is obstructing it. It could be that the thickness of the stripping is too thick preventing the door from closing far enough to allow the latch to insert into the strike plate.

Is the double width 39' long or is it 19.5' x 2 single widths?

I have cut mine up, but I would say it’s the latter. Generous for one door while using the double width.

Will this kit also make a room darker? I’m trying to blackout my bedroom but light currently creeps in along the edges of the door.

It could. I would measure the crack at the widest point and see if it matches the thickness of the stripping.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Weather Stripping Soundproof Doors, Windows – White Kit - 39 Feet Self Adhesive Weatherstrips & 43.3” Under Door Sweep – Wind, Dust, Draft & Insect Proof – Rubber Strips to Seal Door Cracks

Weather Stripping Soundproof Doors, Windows – White Kit - 39 Feet Self Adhesive Weatherstrips & 43.3” Under Door Sweep – Wind, Dust, Draft & Insect Proof – Rubber Strips to Seal Door Cracks

Product ID: 46268455

Details

Brand
Kanzzy
Color
White
Material
Rubber
Number of Items
1
Recommended Uses For Product
Door

📏39 ft total sealing length

🔇Effective noise reduction

🛠️Peel & stick strong adhesive

Description

🔇 Seal the noise, unlock your focus.

RISK FREE UPGRADE - Backed by a 100% money-back guarantee—try it, love it, or get your cash back, no questions asked.
ALL WEATHER DEFENSE - Blocks wind, dust, drafts, and pesky insects to keep your space pristine and distraction-free.
360 DOOR SEAL MASTERY - Complete coverage with 39 ft strips plus a 43.3” under-door sweep for total sound and draft blocking.
PRO GRADE SOUNDPROOFING - Cut down background noise for crystal-clear calls, podcasts, and focused work sessions.
DIY INSTALLATION NO FUSS - Peel, stick, and seal in minutes—no tools or pros needed, perfect for busy millennials.

This Weather Stripping Soundproof Kit offers 39 feet of self-adhesive silicone strips plus a 43.3-inch under-door sweep, designed to seal doors 360° against noise, drafts, dust, and insects. Easy to install with peel-and-stick backing, it enhances home office audio quality by reducing background noise, making it ideal for professionals working remotely. Durable, removable without damage, and backed by a no-questions-asked money-back guarantee.

Specifications

ASIN	B0742H2XBR
Best Sellers Rank	#606,861 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,068 in Weather Stripping
Brand Name	Kanzzy
Color	White
Customer Reviews	4.1 4.1 out of 5 stars (1,000)
Global Trade Identification Number	08936124804458
Manufacturer	Kanzzy
Manufacturer Part Number	5102405427
Material Type	Rubber
Model Number	5102405427
Number of Items	1
Recommended Uses For Product	Door
Unit Count	1 Count

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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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