Pella 250 Series Left-Operable Vinyl Sliding Window, 47-1/2 in. x 47-1/2 in.

Durable, low-maintenance vinyl sliding window designed for new construction. Triple-pane Low‑E argon glass improves comfort and energy performance, while the integrated nail fin simplifies installation. Includes a half fiberglass screen and a secure metal cam lock.

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Key Features:

• Energy-Efficient Triple Pane: NaturalSun Low‑E insulating glass with argon for improved insulation and year-round comfort
• Smooth Sliding Operation: Left-operable sash glides horizontally; right sash remains stationary
• Weather-Resistant Build: Interlocking sashes, dual weatherstripping, and Pella’s Weather Repel System help reduce drafts and leaks
• Durable Vinyl Frame: Fade-resistant formula for long-lasting color retention and minimal maintenance
• Easy New-Construction Install: Integrated nail fin; includes half screen with fiberglass mesh

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Specifications Table:

Specification	Details
Series Name	250 Series
Actual Size (W x H)	47-1/2-in x 47-1/2-in
Common Size (W x H)	48-in x 48-in
Rough Opening Size (W x H)	48-in x 48-in
Jamb Depth Measurement	3-1/4-in
Sash Operation (Exterior View)	Left-operable
Frame Material	Vinyl
Frame Profile	Flat
Exterior Color/Finish	White
Interior Color/Finish	White
Hardware Color/Finish	White
Glass Insulation	Low-E argon (NaturalSun)
Glazing Type	Triple pane
Glass Strength	Annealed
Argon Gas Insulated	Yes
Design Pressure (DP) Rating	35
Clear Opening Size (W x H)	18-51/64-in x 43-1/4-in
Clear Opening Sq Ft	5.6441
Lock Type	Cam
Number of Locks	1
Nail Fin	Integrated
Roller Type	Vinyl rollers
Sash Configuration	2-lite
Grid Included	No
Impact Resistant	No
Obscure Glass	No
Paintable	No
Project Type	New construction
Screen Included	Half
Screen Frame Type	Roll-form
Screen Type	Fiberglass mesh
Solar Heat Gain Coefficient (SHGC)	.25
U Value	.21
Sound Transmission Control (STC) Rated	Yes
Wood Jamb Extension	None
Warranty	Limited lifetime
Color/Finish Family	White
CA Residents: Prop 65 Warning(s)	Yes
ENERGY STAR Certified (Zones)	No (North, North/Central, South/Central, Southern)
Florida Product Approved	No
Hurricane Approved	No
Meets CA Forced Entry Requirements	No
Meets Title 24	No
Meets Wildland Urban Interface	No
UNSPSC	30171600

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Frequently Asked Questions (FAQ):

Q: Is the screen included?
A: Yes, a half screen with fiberglass mesh is included.

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Q: What is the jamb depth?
A: 3-1/4 inches.

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Q: Is this window ENERGY STAR certified?
A: No, it is not ENERGY STAR certified for any zone.

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Q: What type of glass is used?
A: Triple-pane NaturalSun Low‑E glass filled with argon; annealed glass strength.

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Q: What is the rough opening size?
A: 48 in. x 48 in. (W x H).

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Sleek Light—Effortless Modern Framing

This sliding window invites a clean ribbon of daylight, creating an elegant, streamlined moment on any wall. I love the whisper-thin profile that maximizes glass for a crisp, contemporary view. Pair it with layered linen drapery and matte black hardware for contrast and drama. It’s a refined essential that elevates everyday living with ease and polish.

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Bring home brighter views and lasting performance—add the Pella 250 Series sliding window to your project today.