Can you cut it to make it fix several RV windows?

Absolutely. A razor blade or moderately sharp scissors will easily cut it. I cut it into 20x46" panels to insulate the inside of my metal garage door. Just one heads up: if you ever want to affix it to vinyl (say a vinyl coated metal garage door...) be sure to use vinyl adhesive. The other stuff won't work.

How temporary is this product? I want to use it on huge bedroom windows, but be able to remove it when the temp is mild.

It will be as temporary as whatever you use to affix it to the window is. There is no adhesive on this product. This is like the stuff used to make sun visors for car windshields. Think bubble wrap with silver covering. It is very sturdy and you should be able to reuse it many times.

Would this make a good heat reflecting layer for under your sleeping bag, in your tent?

Yes. YouTube camping/survival guru ReallyBigMonkey1 demonstrates how tough Reflectix is and uses it to layer with a welding blanket to make a really stout survival blanket/tarp. Plenty of Bushcraft/Hiking people use Reflectix mats under their sleeping bags or pads.

I want to line a roosting box (a community nesting box for birds in the winter, they huddle to share warmth) with this. Would it work to trap heat?

I think the fact that it has some insulation (like a padded mailer) would help trap heat. And it would work for sure if you added a heat source like Maryanne suggested. I feel sure that the Reflectix would keep the air warmer than foam. I've tried using a thick foam padding to insulate a dog house. The cold wind blew through small cracks in the dog house and eventually seeped through the foam because there was no barrier. The Reflectix is a padded barrier.

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Reflectix BP48010 Double Pack Insulation, 48 in. x 10 ft

Product ID: 4612577

Details

Brand
Reflectix
Item Thickness
10 Inches
Material
Reflective
Product Dimensions
120"L x 48"W
Recommended Uses For Product
radiant floor

📏48 in. x 10 ft coverage per roll

🔥Operates -60°F to +180°F

🛡️97% radiant heat reflection

S/.1089

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Description

❄️ Stay Cool, Save Big: Reflectix Insulation Means No More Sweaty Summers!

DURABLE 7 LAYER CONSTRUCTION - Seven layers including dual aluminum foil and insulating bubbles for unmatched strength and thermal resistance.
EASY TOOL FREE INSTALLATION - Cut 2” larger than your window frame and secure without adhesives or hardware—no mess, no fuss.
REFLECTS 97 OF RADIANT HEAT - Slash your cooling costs with industry-leading heat reflection.
UV HEAT BLOCKER FOR HOME VEHICLE - Protect interiors from sun damage and keep your car cooler on scorching days.
GENEROUS 40 SQ FT COVERAGE PER ROLL - Perfectly sized to cover multiple windows or spaces with ease.

Reflectix BP48010 Double Pack Insulation is a premium 7-layer reflective insulation roll measuring 48 inches by 10 feet, designed to reflect 97% of radiant heat. Its durable construction combines aluminum foil and polyethylene bubbles to provide superior thermal resistance and UV protection. Ideal for windows, attics, crawl spaces, and vehicles, it operates effectively in temperatures from -60°F to 180°F. Proven to reduce cooling costs by up to 75%, this insulation is a must-have for energy-conscious professionals seeking smart, easy-to-install solutions.

Specifications

ASIN	B000BPAULS
Best Sellers Rank	#114,919 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #124 in Weatherproofing Window Insulation Kits
Brand	Reflectix
Brand Name	Reflectix
Coverage	40 square_feet
Customer Reviews	4.7 out of 5 stars 2,704 Reviews
Global Trade Identification Number	00716511340008
Included Components	Insulation Resistance Meters
Item Dimensions L x W	120"L x 48"W
Item Thickness	10 inches
Item Type Name	Double Pack Insulation
Item Weight	907 g
Manufacturer	Reflectix
Manufacturer Part Number	BP48010
Manufacturer Warranty Description	Warranty
Material	Reflective Foil
Material Type	Reflective Foil
Model Number	BP48010
Number of Items	1
Number of Packs	2
Product Dimensions	120"L x 48"W
Recommended Uses For Product	radiant floor applications, crawl spaces, duct insulation, metal buildings, basement walls, attics
UPC	716511340008
Unit Count	1 Count

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S/.1089

Duties & taxes included

In stock

Sold byAmazon PeruDelivered 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 Peru.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

Farhan Q.

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

2 months ago

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