Name: Project Source 40000 Series 14-in x 21-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included)
Brand: Project Source
SKU: 5013341565
Rating: 4.6 (66 reviews)

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The Project Source mobile home window will add beauty and more light into your home - the single hung style operates up and down, making it easy to bring in fresh air

The Project Source mobile home window will add beauty and more light into your home
Very easy to install with large, flush mounting flange
Maintenance-free design and finish, this window is the perfect choice for any mobile home
Standard window sizes will fit most mobile homes
Included with every window is a durable screen to keep insects out
Actual size is 14-in width x 21-in height
Rough opening 14-1/4-in width x 21-1/4-in height
Limited lifetime warranty on window
.

Dimensions
Common Size (W x H)	14-in x 21-in	Clear Opening Size (W x H)	13-in x 8-3/4-in
Jamb Depth Measurement	1-3/4-in	Rough Opening Size (W x H)	14-1/4-in x 21-1/4-in
Clear Opening Sq. Ft.	.79	Weight (lbs.)	5
Actual Size (W x H)	14-in x 21-in

Glass Features
Impact Resistant	No	High Altitude Rated	No
Glass Insulation	Low-E	Design Pressure (DP) Rating	0
Argon Gas Insulated	No	Solar Heat Gain Coefficient (SHGC)	.07
Glass Strength	Single strength	Glazing Type	Double pane
Obscure Glass	No	U Value	1

General
Paintable	No	Interior Color/Finish	Silver
Series Name	40000 Series	Project Type	Replacement
Color/Finish Family	Silver	Exterior Color/Finish	Silver
Lowe's Exclusive	Yes

Features
Grid Included	No	Nail Fin	Integrated
Insect Screen Included	Yes	Hardware Color/Finish	Silver
Frame Material	Aluminum	Screen Type	Fiberglass mesh
Lock Type	Cam	Screen Frame Type	Roll-form
Screen Included	Half	Wood Jamb Extension	None
Tilting	No	Balance System	Constant force
Frame Profile	Flat	Number of Locks	2

Compatibility
For Use with Mobile Homes	Yes

Warranty
Warranty	Limited lifetime

Certifications
CA Residents: Prop 65 Warning(s)	No	Meets Wildland Urban Interface	No
Meets CA Forced Entry Requirements	No	Florida Product Approved	No
ENERGY STAR Certified South/Central Zone	No	Texas Department of Insurance Approved	No
ENERGY STAR Certified Southern Zone	No	Sound Transmission Control (STC) Rated	No
ENERGY STAR Certified Northern Zone	No	Hurricane Approved	No
ENERGY STAR Certified North/Central Zone	No	Miami Dade Approved	No

Miscellaneous
UNSPSC	30171600

Check out the Best Selling Single Hung Windows on Lowes.com

Review

4.6 out of 5

66 Reviews

91% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise the window for its perfect fit and seamless installation, with most noting it fits exactly as advertised and opens and closes smoothly. Many describe straightforward setup that requires minimal effort when properly prepared, and several mention adding caulk creates a wind- and water-tight seal. Reviewers consistently highlight reliable performance for mobile homes, sheds, and residential projects, appreciating its dependable functionality and budget-friendly value. A few note screws aren't included and wish for clearer installation guidance, though these minor concerns rarely impact overall satisfaction. Most customers consider it an excellent choice for its intended purpose.

Customer review summary generated by AI, including incentivized reviews.

66 Customer Reviews

Sort By

Perfect for my needs

Would Recommend

I've been living with a beat-up plexiglass window for years, so this is a major move upwards for me. The price is right and it is just what I need for the renovations I'm doing in my one bedroom.

BarbaraJuly 27, 2026
From 40000 Series 30-in x 54-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included) Verified Purchaser

Was this Review Helpful ?

window i couldn’t find

Would Recommend

perfect fit and built to last

TobyleeJune 8, 2026
From 40000 Series 30-in x 27-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included) Verified Purchaser

Was this Review Helpful ?

Exactly as described

Would Recommend

Only ones that fit my trailer perfectly

LynnMay 3, 2026
From 40000 Series 30-in x 40-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included) Verified Purchaser

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/359efef3-1b8e-5926-a2c5-82186bda0cea

Was this Review Helpful ?

Good product

Would Recommend

Worked well for y project

ElmoApril 21, 2026
From 40000 Series 30-in x 27-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included) Verified Purchaser

Was this Review Helpful ?

Good windows

Would Recommend

Scribed holes for mounting

ChristopherApril 18, 2026
From 40000 Series 30-in x 27-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included) Verified Purchaser

Was this Review Helpful ?

Great for storage shed and or she shed

Would Recommend

Crafted very well. Durable for the price point

FamHDZ3April 8, 2026
Verified Purchaser

Was this Review Helpful ?

It’s the perfect window for my house. It’s what th

Would Recommend

ConnieMarch 23, 2026
From 40000 Series 30-in x 27-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included) Verified Purchaser

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COMPARE PRODUCTS

		Name	Current Item Project Source40000 Series 14-in x 21-in Silver Exterior Silver Interior Aluminum Replacement Single Hung Window Low-E (Half Screen Included)
		Ratings	66
		Frame Material	Aluminum
		Actual Size (W x H)	14-in x 21-in
		Project Type	Replacement
Project Source20000S Series 23-1/2-in x 29-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	Project Source20000S Series 17-1/2-in x 23-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	JELD-WENV-2500 23-1/2-in x 47-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window Low-E argon (Half Screen Included)	Project Source20000S Series 17-1/2-in x 35-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window (Half Screen Included)	JELD-WENV-2500 27-3/4-in x 53-1/2-in White Exterior White Interior Vinyl Replacement Single Hung Window Low-E argon (Half Screen Included)	RELIABILT105 Series 31-1/2-in x 51-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window Low-E argon (Half Screen Included)	RELIABILT150 Series 35-1/2-in x 59-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window Low-E argon (Half Screen Included)	RELIABILT105 Series 23-1/2-in x 35-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window Low-E (Half Screen Included)	RELIABILT105 Series 35-1/2-in x 59-1/2-in White Exterior White Interior Vinyl New Construction Single Hung Window Low-E argon (Half Screen Included)
177	177	68	177	3	163	139	3	93
Vinyl	Vinyl	Vinyl	Vinyl	Vinyl	Vinyl	Vinyl	Vinyl	Vinyl
23-1/2-in x 29-1/2-in	17-1/2-in x 23-1/2-in	23-1/2-in x 47-1/2-in	17-1/2-in x 35-1/2-in	27-3/4-in x 53-1/2-in	31-1/2-in x 51-1/2-in	35-1/2-in x 59-1/2-in	23-1/2-in x 35-1/2-in	35-1/2-in x 59-1/2-in
New construction	New construction	New construction	New construction	Replacement	New construction	New construction	New construction	New construction