How does it attach to the window?

Built-in suction cups press directly onto the glass. No rod, bracket or drilling is needed, and it lifts off without leaving marks.

Does it really keep a room cooler?

The double-sided aluminum foil reflects sunlight before it passes through the glass, which reduces heat gain in summer and heat loss in winter. Expect the biggest effect on sun-facing windows.

Will it make the room completely dark?

The foil blocks nearly all incoming light, so a covered pane goes dark. Light can still enter around the edges if the shade is smaller than the window.

What sizes are there?

All sizes are 100 cm wide (about 39 in) and range from 30 cm to 80 cm tall (about 12 to 32 in). Measure the glass and pick the height that covers it.

Can I use it in a car or camper?

Yes. It is lightweight, rolls up for storage and works on car side windows, camper windows and skylights as well as home glass.

Wipe the foil surface with a damp cloth. Avoid abrasive cleaners, which can scratch the reflective coating.

Where is the UALSRZL Window Heat Blocker cheapest?

At Walmart, for $5.77, as of our latest check.

What do buyers say about the UALSRZL Window Heat Blocker?

Rated 4 out of 5 from 1 ratings.

UALSRZL Window Heat Blocker

Best price now

$5.77at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

UALSRZL Window Heat Blocker

Best price now

$5.77at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $5.77 at Walmart on Nov 12.

Our take on the UALSRZL Window Heat Blocker

This is a suction-cup window shade made of double-sided aluminum foil over insulation, sold in several widths up to about 32 inches tall. It reflects sunlight and heat off glass, darkens a room almost completely, and installs without tools or drilling. It suits renters, daytime sleepers, nurseries and camper or car windows. Against fabric blackout curtains it blocks light more completely and needs no rod, but it is stiff, utilitarian-looking and covers only small panes.

Best forRenters who can't drillDaytime sleepers and shift workersNurseries and home theatersCamper, car and skylight windows

Pros

No tools, screws or drilling: suction cups press onto glass
Double-sided aluminum foil reflects heat and sunlight
Blocks nearly all light for a dark room
Rolls up for storage and travel
Wipes clean and resists tearing

Cons

Suction cups can lose grip on dirty or textured glass
Foil look is plain and not decorative
Small sizes cover only part of a large window
Little insulation value beyond the glass surface

UALSRZL Window Heat Blocker prices at every store

WalmartNew
In stockSold by liyunw
$5.77+ $1.99 shippingChecked Nov 12
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Also available at

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UALSRZL Window Heat Blocker price history

Lowest price we've seen: $5.77 on Nov 12 at Walmart. Tracked across 1 store since Nov 12.

About the UALSRZL Window Heat Blocker

This window heat blocker is a roll-up shade with double-sided aluminum foil construction. The foil reflects sunlight and heat, which helps keep rooms cooler in summer and warmer in winter. It also blocks nearly all incoming sunlight to make a dark room, and it helps protect furniture and flooring from fading.

Built-in suction cups attach the shade directly to glass. Installation needs no tools, screws or drilling, and the shade removes cleanly.

It is lightweight and rolls up for storage or transport. It can be used on home windows, glass doors, sunrooms, skylights, campers and car windows. The tear-resistant aluminum foil and insulation material can be wiped clean with a damp cloth.

Material: Double-sided aluminum foil with insulation material
Installation: Built-in suction cups, no drilling or tools
Use on: Windows, glass doors, sunrooms, skylights, campers, car windows
Care: Wipe clean with a damp cloth
Packing size: 40 x 20 x 2 cm (15.8 x 7.8 x 0.8 in)
Weight: 300 g (0.66 lb)
In the box: 1 x shade

Specifications

color: OtherSource
actual_color: ASource
size: 15.75x7.87x1.57Source
Actual Color: A

Questions and answers

How does it attach to the window?: Built-in suction cups press directly onto the glass. No rod, bracket or drilling is needed, and it lifts off without leaving marks.
Does it really keep a room cooler?: The double-sided aluminum foil reflects sunlight before it passes through the glass, which reduces heat gain in summer and heat loss in winter. Expect the biggest effect on sun-facing windows.
Will it make the room completely dark?: The foil blocks nearly all incoming light, so a covered pane goes dark. Light can still enter around the edges if the shade is smaller than the window.
What sizes are there?: All sizes are 100 cm wide (about 39 in) and range from 30 cm to 80 cm tall (about 12 to 32 in). Measure the glass and pick the height that covers it.
Can I use it in a car or camper?: Yes. It is lightweight, rolls up for storage and works on car side windows, camper windows and skylights as well as home glass.
How do I clean it?: Wipe the foil surface with a damp cloth. Avoid abrasive cleaners, which can scratch the reflective coating.
Where is the UALSRZL Window Heat Blocker cheapest?: At Walmart, for $5.77, as of our latest check.
What do buyers say about the UALSRZL Window Heat Blocker?: Rated 4 out of 5 from 1 ratings.