The superior performance of Sheffield® Windows starts with innovation. Every precision-engineered component contributes to superior energy savings. The multi-chamber design helps trap dead air to produce an effective barrier, while the extra-thick, fusion-welded frame and sashes provide superior structural strength and create a permanent barrier against air and moisture infiltration, adding up to greater energy savings – and lower utility bills.

Sheffield Windows feature a sloped sill helping to prevent air and water infiltration while maintaining a timeless, detailed appearance. Beveled mainframe on double-hung and sliding windows complement any home's style.

Best yet, Sheffield Windows are covered by Alside’s impressive Lifetime Limited Warranty* for complete peace of mind. Also included with a installation from our company is Alside's Lifetime Glass Breakage Warranty*.

*See printed warranties below for complete details.

Features and Benefits

  • The multi-chamber design of the Sheffield Window helps trap dead air to produce an effective insulating barrier
  • Fusion-welded frame and sashes provide superior structural strength and create a permanent barrier against air and moisture infiltration
  • Ensuring easy operation, the constant force balance system and heavy-duty operating hardware continue to operate perfectly, even after decades of regular use
  • Heavy-duty SteelForce™ reinforcement is placed within the sashes at the meeting rails to ensure extra protection at this very critical and often used location
  • The Intercept Spacer System helps reduce conducted heat loss through the window and is better at retaining insulating gas than many conventional designs
  • Triple-barrier weatherstripping between the sash and jamb for superior protection from air and water infiltration
  • Sloped sill helps prevent water and air infiltration, forcing water to drain to the exterior of the window
  • Optional ClimaTech insulated glass packages available. Consult your window professional for the optimal glass package required for your home and climate zone.

Options

  • ClimaTech® insulated glass packages 
  • Designer grids enclosed within the insulated glass unit for easy cleaning 
  • Colonial, diamond and prairie grid patterns available along with V-grooved glass
  • White, Beige, Rich Maple, Light Oak, Dark Oak, Foxwood and Cherry interior color options
  • White, Beige Architectural Bronze, Hudson Khaki, Desert Clay, English Red, Forest Green, American Terra and Castle Gray exterior color options
  • Simulated Divided Lites (SDLs) recreate historical true divided lites—small, individual panes of glass separated by muntins and mounted in a frame
  • Full screens available (Full screens are standard on exterior color-finished windows)
  • Obscure glass options are also available.
Brochures

Alside's Lifetime Limited Warranty

Alside FrameWorks Limited Warranty

Alside Lifetime Glass Breakage Warranty