Is the product strong enough to keep open a window that wants to slide closed? My old window won't stay up and I'm looking for a way to prop it open.

Yes it will. I'm using it myself in a window that doesn't want to stay open. Plus it has weather stripping and bugs don't seem to get in like the ones that are sold at big box stores.

Is this enough to keep my cat from jumping out?

The tighter the fit, the greater the likelihood that your cat cannot jump out. I don't think my cat could jump out the windows that the screens are in. If the cat charges the screen, maybe! Good luck.

Do these screens rust?

I've only had mine for a few months, so I wouldn't know about rust. I can say that they seem to be pretty durable. I have five kittens jumping and scratching at the screens to get to the birds on my windowsill, and yet the screens appear to be fine so far.

do have screens to fit a20 1/2" wide by 31" long?

The description say's they are 15 inches high and 21to40 inches wide so you would have to measure your area and see.

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

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Fenestrelle Expandable Window Screen, 15″ H × 21″–40″ W Horizontal, 2-Pack | 2‑Way Adjustable Window Screen, Flame Resistant Fiberglass Mesh, Durable Aluminum Frame with Built-In Weatherstrip

Fenestrelle Expandable Window Screen, 15″ H × 21″–40″ W Horizontal, 2-Pack | 2‑Way Adjustable Window Screen, Flame Resistant Fiberglass Mesh, Durable Aluminum Frame with Built-In Weatherstrip

Product ID: 60092678

Details

Brand
Fenestrelle
Color
Gray
Item Weight
1.07 kg
Material
Aluminum
Product Dimensions
40"L x 21"W

🔥Flame resistant fiberglass mesh

↔️Expands 21"–40" wide

🛠️Tool-free quick installation

B/.348

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🪟 Upgrade your view with Fenestrelle: the screen that fits, protects, and performs!

HASSLE FREE INSTALLATION - No tools required—just slide in and close the sash for instant protection and ventilation.
BUILT IN WEATHERSTRIP SEAL - Fuzzy edges create a snug, draft-blocking fit for year-round comfort and energy savings.
PREMIUM FLAME RESISTANT MESH - Tight-weave fiberglass mesh blocks bugs and debris while enhancing safety with flame resistance.
DURABLE RUST RESISTANT FRAME - Powder-coated aluminum frame ensures long-lasting strength and sleek appearance.
CUSTOM FIT FOR DOUBLE HUNG WINDOWS - Adjusts horizontally and vertically to fit a wide range of window sizes effortlessly.

Fenestrelle Expandable Window Screen 2-Pack offers versatile 2-way adjustability (21"–40" wide, 15" high), a durable powder-coated aluminum frame, and flame-resistant fiberglass mesh. Designed for double hung windows, it features built-in weatherstripping for draft protection and installs tool-free for quick, secure fit—perfect for modern homes seeking comfort, safety, and style.

Specifications

ASIN	B0776ZP83Q
Best Sellers Rank	#5,330 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Window Screens
Brand Name	Fenestrelle
Color	Gray
Customer Reviews	4.7 4.7 out of 5 stars (9,316)
Finish Types	Powder Coated
Item Dimensions L x W	40"L x 21"W
Item Weight	1.07 kg
Manufacturer	AWarehousefull
Manufacturer Part Number	FEN 84010
Material Type	Aluminum
Model Number	FEN 84010
Style Name	Pack of 2
UPC	852096008015
Unit Count	2 Count

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