Because it's mated, is the actual usable length 1/2 of the length listed?

Yes. This product is all I use on my pedalboards.

is the length described refering to the actual mounting length? or in reality one gets half because you need to use two pieces of the tape?

It is the actual length of the roll. There are different types of Dual Lock, allowing a person to mix and match types allowing for different amounts of adhesion between two devices. As an example, you may want less adhesion for a removable TV remote control mounted to a wall, vs mounting a IP-TV permanently to a surface behind the display. This is doble by mixing and matching Dual Lock products.

Does the adhesive get soft when it warms? I want to use in a window to hang foil/foam insulation. Hook/loop adhesives tend to let go when sun hits it.

It will if exposed to direct sunlight.

Hard to say without knowing the intended application. The construction of the hook and loop is entirely plastic so yes there. The adhesive is very strong however I doubt it would withstand constant submersion. If were talking a bit of rain here or there. I'd bet it would last through a season, depending on the application surface. Make sure its clean and dry and kept dry for a few days until it is "set". Hope that helps

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3M Dual Lock 25mm x 1.2m Black 1 Pack

Product ID: 653142030

Details

Brand
Bulina
Colour
black / black
Material
Nylon
Size
Pack)
Style
Classic

🔩250 stems/in² for ultra-strong hold

🖤Sleek black design for discreet mounting

🌡️Withstands temps up to 200°F (93°C)

7280 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖤 Lock it. Snap it. Own your space.

CLEAN PEEL OFF - Easily removable with alcohol spray—no sticky mess or surface damage, ideal for temporary or permanent use.
SNAP STRONG SECURITY - Interlocking mushroom heads deliver a satisfying audible snap, confirming a rock-solid bond every time.
RECLOSABLE REUSABLE - Open and close multiple times without losing grip—perfect for dynamic, evolving setups.
FAST STRENGTH BUILD UP - Achieves 50% strength in 20 minutes and 90% in 24 hours, so your projects stay secure fast.
VERSATILE SURFACE BONDING - Bonds effortlessly to metals, plastics, glass, wood, and painted surfaces without residue or damage.

The 3M Dual Lock 25mm x 1.2m Black is a premium reclosable fastener featuring 250 interlocking mushroom-shaped stems per square inch for a durable, reusable bond. Designed to adhere to a wide range of surfaces including metals, plastics, glass, and wood, it withstands temperatures up to 200°F (93°C). Its strong acrylic adhesive builds strength quickly and peels off cleanly with alcohol, making it the smart choice for professional-grade mounting and fastening in both indoor and outdoor environments.

Specifications

ASIN	B0BGGCG415
Best Sellers Rank	5,338 in DIY & Tools ( See Top 100 in DIY & Tools ) 85 in Mounting Tape
Brand	Bulina
Brand Name	Bulina
Colour	black / black
Country Of Origin	China
Customer Reviews	4.6 out of 5 stars 708 Reviews
Item Highlight	Reclosable, Fastener, Mounting Tape, Interlocking, Mushroom Shaped, Strong Adhesive, Sticy Tape, for Indoor and Outdoor
Manufacturer	Bulina
Manufacturer Part Number	DB25120
Model Number	DB25120
Mounting Type	Adhesive
Mounting type	Adhesive
Number of Items	1
Number of Packs	1
Recommended Uses For Product	mounting and fastening various materials in indoor and outdoor applications
Recommended uses for product	mounting and fastening various materials in indoor and outdoor applications
Size	25mm x 1.2m (1 Pack)
Style	Classic

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