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🛠️ Reflect your comfort, block the heat — insulation that works as hard as you do!
The Reflective Bubble Insulation Sheet by FONUNO is a 3mm thick, double-sided aluminum foil roll with polyethylene bubble cushioning, measuring 23.6 inches by 10 feet. Designed for windows, RVs, roofs, and garage doors, it offers superior heat reflection, waterproof durability, and easy installation with customizable sizing and included double-sided tape. Highly rated for enhancing temperature control and energy efficiency in diverse environments.












































| ASIN | B0CH9HNXQ3 |
| Best Sellers Rank | #2,664 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Weatherproofing Products |
| Brand | FONUNO |
| Brand Name | FONUNO |
| Coverage | 2832 square inches |
| Customer Reviews | 4.6 out of 5 stars 1,882 Reviews |
| Item Dimensions L x W | 120"L x 23.6"W |
| Item Thickness | 3 Millimeters |
| Manufacturer | FONUNO |
| Manufacturer Part Number | GRM168 |
| Material | Polyethylene (PE) |
| Material Type | Polyethylene (PE) |
| Model Number | GRM168 |
| Product Dimensions | 120"L x 23.6"W |
| Recommended Uses For Product | Windows, RVs, roofs, garage doors, outdoor use |
| Unit Count | 1.0 Count |
J**.
Huge Improvement in Sauna Tent Heat Retention — Worked Great
This insulation worked great for my setup. I used it to line a sauna tent and it made a huge difference in heat retention and overall performance. Before adding it, the tent was topping out around 140 degrees, and afterward it was reaching close to 180 degrees much more consistently. Easy to work with, lightweight, and surprisingly effective. Definitely worth it if you’re trying to improve insulation or heat efficiency.
K**Y
Did not expect it to be see-through
So I bought this for my metal screen door because I don’t like the heat or dirty air that comes through it but at the same time I wanna put a box fan strapped to two air filters (one 8 Merv electric static aluminum filter set up against the door and one 13 Merv filter that’s actually taped to the box fan itself right up against the 8 Merv) to pull clean air through (and help reflect some of the heat from the air back out as well as make the 13 Merv last longe) because I like fresh clean air as opposed to stale air with tons of CO2. And honestly, I’m so glad I bought this! It is fantastic and definitely cuts down on the heat by several degrees. I was shocked when I woke up the next morning. The air coming through the fan was several degrees higher than the ambient temperature in the room. I used two separate thermometers to test the difference (one set right in front of my box fan and the other one set a few feet away on a table). There was about a 5° difference! And that’s without an AC on. But more shocking, I was surprised to see that it was see-through, not something I was expecting with something that’s supposed to be double aluminum, but it’s great for a door. Yet since I put it up at night, I didn’t realize it was see-through at the time (see-through as in you can see out, but others can’t see in—at least during the day, but even if they can see in at night with your lights on, it still gives plenty of privacy like a curtain), but I still don’t regret putting plexiglass windows in it. That’s the third picture, I ran out of mounting tape for the other ones so I haven’t put them up yet, but because of that you can definitely see how see-through it is and if you don’t want it to be see-through you have to apply a second layer over it. (double it up) And honestly, I could not be happier with how it looks either, it looks so professional and it feels so secure. Another reason I bought this was because somebody else said that it was so durable it could be used outside, so I’m not worried about it breaking down or anything overtime. It is definitely hard to tear and hard to break, but it cuts good with scissors that are sharp. And I still have a lot left over that I’m gonna use for other stuff so it’s a good bang for the buck. All in all, I wish I bought this sooner!
V**G
Highly recommended for Rv windows
This worked great on my rv windows. I cut it to fit, stuck it behind the shade, and it worked perfectly! No need for the sticky tabs, can take them down and up very easily! It’s keeping me a good bit warmer. For the price, it’s a cheap fix that actually works!
L**8
Works wonders
This has helped temperature control in our Rv so much. Easy to use and amazing reflectivity
A**D
Tree insulation
this is the second year I have used this to insulate my fig tree. Last year it worked at least as well as straw, and was much easier to use and take down again.
S**1
what a difference
This reflects well the sun and very versatile. They are of good quality. I noticed a difference in the temps by about 10 to 15 degrees. My RV ac doesn't run as often now and so glad I purchased. They fit well in the window and easy to cut if needed. The appearance is nice as they are inside behind curtains but from the outside they look great.
P**.
Handy in the RV
I bought this item to put on the roof of the slide-outs on my RV this past winter in Arizona. I believe it helped keep the interior several degrees cooler. (my AC was not working well) I left them on the roof after the AC was repaired and the one on the kitchen slide seemed to make a real difference in the amount of time the refrigerator cooling system was on. I used a couple small ropes to keep the wind from blowing them off.
L**E
Reflective Bubble Insulation Sheet
I purchased this reflector for my solar panels in an attempt to get more watts from the sun - and it does work. For a very small price (purchased on sale at around 25% off), I can get anywhere from 5-20 more watts out of my solar panel depending on where the sun is in the sky. Right now, even with the reflector being a little dusty, I'm getting 16 more watts out of my solar panel here in Phoenix AZ at 11:03am. I'm very happy with this purchase as the reflector has been next to my solar panel since June 5th, getting blown around A LOT, dust flying every day as I live in a very windy area, and the reflector doesn't have any rips/tares at all and all I have holding it in place is a couple large binder clips I had on hand. It's very well made for what I need, and the size if perfect for either my 2 Renogy panels or my portable/foldable 4-panel solar panel. I can't be happier with this purchase.
C**Y
Great product
Very easy to handle
T**Z
Helped Keep Heat Out and Added Privacy While Camping
Used this reflective bubble insulation for camping and it worked really well. I cut it to fit the windows and it helped block heat from the sun while also adding some privacy inside the vehicle. The material is lightweight, easy to cut, and durable enough to reuse multiple times. The double-sided reflective layer made a noticeable difference during hot days and cooler nights. Very useful for camping, road trips, or DIY insulation projects.
C**D
Exactly what I wanted
I haven’t used it yet but appears to be exactly what I wanted so expect it to be fine
S**A
Warms up a room when you cover windows
This Winter has been a rough one. Sunroom is not 4 seasons yet dogs enjoy sleeping in the cool room. Not cold room. Purchased this item to cover windows and within 2 hours, room temp warmed up. Easy to hang, good quality. Will buy again
C**B
A bit thin
I put it on my windows however I used clear packing tape around the edges. It’s a little thinner than I hoped. I had to put a second layer on, but then again the sun really hits my windows on that side of the house. Stickers do come with it to stick on the window however I suggest you use masking tape and tape around the window seal as well for a better coverage
Trustpilot
1 month ago
2 weeks ago