Series 3500 Windows

Double Hung, 2 and 3-Lite Sliders and Picture Windows

The Series 3500 window offers advanced features and outstanding performance. It boasts a rounded interior sash profile, deluxe hardware and a standard 25-year glass breakage warranty.

Series 3500 double hung and sliding windows offer the option of the world’s first flexible window screen – FlexScreen! Learn more about RELIABILT Series 3500 Windows at

Find A Lowe's Store

Instantly Book A Free In-Home Estimate

  • Series 3500 Picture Windows with Obscure Glass and Transoms
    Series 3500 Picture Windows with Obscure Glass and Transoms

Standard Features and Available Styles

  • Aluminum-reinforced multi-cavity construction offers thermal protection and structural integrity
  • Sashes tilt in for easy cleaning from inside your home
  • 2 locks offer increased security (2 locks standard at 27-1/4-in width or wider)
  • Interlocking sash design protects against weather infiltration
  • Easy sash movement with a constant force coil balance system
  • Sashes open and close easily with integrated lift rails on both sashes
  • On sliding windows, tandem rollers ride easily along friction free glide channel
  • Standard with half screen on double hung and full screen on slider. Screens are removable from the inside*
  • Water runs away from house due to sloped sill design
  • Blocks air infiltration with dual-fin weather stripping and rubber bulb seal
  • Ventilates nicely through extruded half screen*
  • Double Hung Design Pressure (DP) 35 rating (window size tested 44-in x 75-in)
  • Optional Double Hung DP 50 rating (window size tested 36-in x 74-in)
  • Slider Design Pressure (DP) 30 rating (window size tested 72-in x 48-in)
  • Jamb depth: 3-1/4-in
Product Close-Up View
Series 3500 Double Hungs
Product Close-Up View
Series 3500 Slider Windows

Vinyl Color Options



Laminated Color Options

Bronze Exterior

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

5/8-Inch Flat Grid

3/4-Inch Flat Grid

5/8-Inch Contoured Grid

1-Inch Contoured Grid

1-1/8-Inch Simulated Divided Lite (SDL) Grid

Grid Patterns




Perimeter Prairie


Glass Options

  • Low-E Glass
  • Ultra Low-E Glass with argon gas
  • Obscure, tempered or double-strength glass

Additional Options

  • Window Opening Control Device (WOCD) to prevent falling from a window (factory applied)
  • Factory mulling of twins, triples and architectural shapes
  • FlexScreen® – The World’s First and Only Flexible Window Screen
  • Charcoal aluminum mesh screen
  • Clear View Screen Mesh
  • Heavy Duty Screen Mesh
  • Full Screen (Double Hung only)
  • DP-50 Wind Zone Rating
  • Lifetime Glass Breakage Warranty

World's First Flexible Window Screen

Like Superman – we found a way to bend steel. With some enhancements and engineering – FlexScreen was born.

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.


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

Learn More

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.

Learn More

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.

Download Guide

Let's Get Started

Schedule a free, no-obligation in-home consultation with Lowe's to get RELIABILT windows and doors for your home today.