Series 451 Horizontal Slider

White 2 Lite Series 451 Slider Window

Overview

Our top of the line Series 451 horizontal sliding new construction windows combine meticulous craftsmanship with the strength and maintenance-free beauty of rigid vinyl construction to deliver exceptional value and lasting durability.  Both sashes are operable and optional low-e glass coating to delivers valuable year-round energy savings.

Series 450 Overview

White 2 Lite Series 451 Horizontal Slider

Features & Benefits

  • Beautiful, true brick mould exterior frame perimeter
  • Tandem rollers ride easily along friction free glide channel
  • Aluminum-reinforced lock rail and meeting rails add strength
  • Integrated glide rail allows easy sash opening and closing
  • Available in XO or OX configurations (sliding panel on left or right)
  • Integrated J-channel (Series 461 available without J-channel)
  • Half Screen comes standard
  • DP 25 (size tested 70″ x 49″)
  • Limited lifetime warranty

Energy Efficient Glass Options

Energy Star Program LogoAtrium windows and doors are engineered with state-of-the-art glass technology to give you outstanding thermal efficiency. With a full range of glass options and special insulated spacers, we have a glass package to fit any climate need or budget. Verify product specifics before ordering.


Low-E Glass

Low-E glass is coated with a microscopic layer of silver that reflects radiant solar energy while permitting visible light to pass through the glass, providing more comfort and lower energy costs.

Low-E Glass and Argon Gas

Argon gas works like an insulating blanket between two panes of glass to further improve thermal eciency and decrease outside sound levels.

Ultra Low-E Glass and Argon Gas

Choose our ultimate glass package for optimal energy efficiency and maximum cost savings. Ultra Low-E glass offers three invisible layers of silver coating in addition to the superior thermal performance of argon gas.

Vinyl Color Options



White

Almond

Clay

Exterior Paint / Laminate Options



Black (Paint)

Brick Red (Paint)

Bronze (Paint)

Clay (Paint)

Dark Chocolate (Paint)

Gray (Paint)

Hunter Green (Paint)

Tan (Paint)

Terratone (Paint)

Device/Monitor screen settings may affect color shown. Please refer to actual window sample when selecting colors. 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.

Available Grid Patterns



Colonial (SL)

Vertical (SL)

Diamond (SL)

Prairie (SL)

Perimeter Prairie (SL)

Valance (SL)

Available Grid Types



1-Inch Contoured Grid

3/4-Inch Flat Grid

5/8-Inch Contoured Grid

5/8-Inch Flat Grid

Simulated Divided Lites (SDL) Grid

Shop All Atrium Windows By Style

Learn More

Window Basics & Learning Resources

Learn More

Atrium Resources For Professionals

Learn More

Videos

Browse through our comprehensive collection of product videos designed to showcase our high-quality new construction and replacement windows as well as our sliding patio doors. Discover all of our features, options and possibilities to create the look you want for your home.

Browse Product Videos