Coeur d'Alene 4722 Double Slider Window (4000 Series)

The Coeur d’Alene 4722 Double Slider earns its LC PG 35 performance grade rating through fusion-welded corners and steel-reinforced interlocks. U-factors range from 0.18 to 0.30 depending on glass package selection — numbers that compete directly with major national brands while targeting the Pacific Northwest’s extreme temperature swings.

This window’s specifically designed for the “Rugged West” — cold, snowy winters paired with hot summers. That’s Montana in a nutshell. The multi-chambered vinyl frame with optional foam filling prevents heat distortion when summer temperatures climb, while the thermal performance handles winter’s worst.

Performance Built for Montana Climate

At 72 x 56 inches tested size, this double slider achieved its LC PG 35 rating. That’s a large opening handling 35 psf design pressure — enough for Montana’s wind events without compromising the frame.

Specification	Value	Source
Performance Grade	LC PG 35	(tested)
Test Size	72 x 56 inches	(tested)
U-Factor Range	0.18 - 0.30	(manufacturer)
SHGC	0.21	(manufacturer)
Frame Material	Extruded PVC with weatherability additives	(manufacturer)

The 0.21 SHGC strikes the right balance for Montana’s heating-dominated climate. Low enough to prevent summer overheating, high enough to capture beneficial solar gain during long winters. Dual pane Low-E insulated glass comes standard, though the U-factor range suggests multiple glass packages available.

Fusion-welded corners reduce moisture intrusion — critical when freeze-thaw cycles try to work water into every seam. Steel reinforced interlocks add strength where sliders typically fail first.

Installation and Maintenance Advantages

Side-load removable sashes set this slider apart. Contractors dealing with second-floor installations or tight access appreciate sashes that lift out without fighting the frame. Cleaning’s simpler too — both sashes remove completely from inside.

Professional installation by certified installers gets emphasized repeatedly in the warranty requirements. Faulty installation is the primary reason for warranty claim rejection. The company accepts AAMA Installation Masters, OSI, or AWDI certification.

Coeur d’Alene provides downloadable guides for new construction, flush fin, and specialized lock installations. Regular cleaning and inspection of weep holes gets specific mention in their vinyl care instructions — someone’s thinking about long-term water management.

Regional Support and Certification

Both AAMA and NFRC tested and certified this window. Installation standards reference AAMA-2400-02 for new construction and AAMA-2410-13 for flush fin applications. These aren’t marketing badges — they’re third-party verification of performance claims.

The window screen, Low-E insulated glass, and hardware come included. Special shapes complement the standard window line, with compatibility for both new construction nail fin and retrofit flush fin applications.

Solar Industries/Coeur d’Alene backs this with a manufacturer’s limited lifetime warranty covering manufacturing defects in vinyl components and insulated glass units. Remember that installation requirement though — hire certified or lose coverage.

The Bottom Line

For contractors working Montana’s temperature extremes, the 4722’s combination of LC PG 35 rating, competitive U-factors (0.18-0.30), and Pacific Northwest engineering makes sense. Side-load sashes solve real jobsite problems. Fusion-welded corners and steel reinforcement address the weak points where cheaper sliders fail.

The design suits light commercial buildings, multi-family housing, mixed-use markets, and residential work. Since 1976, Coeur d’Alene has built their reputation on quality materials and regional expertise. This isn’t a window trying to work everywhere — it’s built for the specific challenges of cold winters, hot summers, and the temperature swings between.

FAQ

What glass packages affect the U-factor range of 0.18-0.30?

The specifications indicate U-factors vary by glass package but don’t detail specific options. Standard configuration includes dual pane Low-E insulated glass. The 0.18 low end suggests availability of advanced coatings or gas fills beyond the standard package.

Can these windows handle Montana’s temperature extremes?

Yes — they’re engineered specifically for the “Rugged West” with cold, snowy winters and hot summers. The multi-chambered vinyl frame with optional foam filling prevents heat distortion, while U-factors down to 0.18 provide strong thermal performance.

What’s the advantage of side-load removable sashes?

Sashes lift out sideways for cleaning and maintenance. This design eliminates the common slider problem of fighting sashes out of tight frames. Second-story installations and confined spaces benefit most from this feature.

Does improper installation really void the warranty?

Yes — faulty installation is the primary reason for warranty claim rejection. The warranty requires installation by AAMA Installation Masters, OSI, or AWDI certified professionals. This isn’t negotiable.