West Series 350P Windows
Single Hung, 2 and 3 Lite Sliders, Casement, Awning and Picture Windows
RELIABILT 350P windows offer advanced features and outstanding performance. This window boasts a top-quality frame for extended durability and is available in a range of energy-saving solutions aimed at reducing your heating and cooling expenses. Choose from an array of custom design options tailored to your home and style needs. Available in western states. Confirm availability with a Lowe’s associate.
Standard Features and Available Styles
- Nail fin with either a 1″ or 1-3/8″ setback
- A baffled weep system prevents insect intrusion, while facilitating rapid rainwater drainage
- Bottom sash is removable and tilts in for easy cleaning
- Dual cam-action lock and continuous weatherstripping
- Structural warm-edge Spacer system for premium performance and structural integrity
- Hardware and fasteners are corrosion resistant for durability
- Durable vinyl and fusion-welded corners
- Designed for durability with a frame depth of 3-7/16 inches
- Design Pressure Rating DP 45 (window size tested 48 x 84)
- Limited Lifetime Warranty
Vinyl Color Options

White

Almond

Clay
Laminated/Co-Extruded Color Options

Bronze Exterior (Co-Extruded)

Black Exterior (Co-Extruded)

Black Interior (Laminated)/Exterior (Co-Extruded)
Note: Device/Monitor screen settings may affect color shown. Please refer to actual window sample when selecting colors. Laminates and exterior painted options available on select products, if they are not shown above they are not available on this product. Interior and exterior laminates available on white window only. Only use mild, water based household cleaner on painted product and rinse immediately with water. See full cleaning instructions for details. Grid offering limited to 5/8” contoured or SDL on exterior painted windows.
Grid Types
Grid Patterns
Glass Options
- Additional high-performance glass options enhance solar protection, diminish noise intrusion, increase security, and ensure privacy, including:
- Low-E Glass
- HP Low-E Glass with Insulating Argon Gas
- HPMax Triple-Pane Glass
- Tinted glass, obscure, laminated, tempered, single glaze
Additional Options
- Title 24 compliance standards
- Frame options include Block Frame, Dual Wall Flush Fin, Nailing Fin, J-Channel Frame, Stucco Key
- Factory mulling of twins, triples and architectural shapes
- Color-coordinated grids-between-the-glass (GBG) in flat 5/8″, sculptured 5/8″ or 1″ styles; simulated-divided-lite (SDL) 7/8″ or 1-1/4″ styles; 2″ accent bar
- Auto Lock feature provides added security
- Custom sizes available
- Availability of co-extruded colors is limited geographically; speak with a Lowe’s representative to confirm availability
- Broze exterior co-extruded color option is only available with white interior
- Black exterior co-extruded color option is available with a white or black interior; black/black color option is a black exterior co-extruded finish with a laminated black interior finish
New Construction Windows
ReliaBilt’s new construction product video provides a detailed look at all of our new construction window offerings.
ReliaBilt Manufacturing Story
Our windows and sliding doors are recognized for their high-quality craftsmanship, innovative engineering and close attention to detail. Learn more about the process used to make them.

ENERGY STAR Program
Looking for ENERGY STAR qualified products? Learn more about the climate zones and performance criteria used to identify ENERGY STAR compliant windows and doors.

The RELIABILT Warranty
Every RELIABILT window and patio door is backed by a limited lifetime warranty on vinyl, glass and all working parts. Each product is individually registered with a product identification number, making ordering replacement parts throughout the warranty period easy and efficient.

RELIABILT Product Care
RELIABILT windows and doors are designed for easy care and maintenance. Click the button below to download RELIABILT’s window and door care and maintenance guide.