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Related terms

• Insulated Glass Unit (IGU)

  Two or more glass panes sealed with a spacer and gas fill to reduce heat transfer. The standard energy-efficient window glazing.

• Steel Entry Door

  An insulated steel-skinned exterior door — strong, secure, economical, but can dent and may show thermal bowing in sun.

• Solid-Wood Door

  A door built from solid lumber or stave-core, the premium traditional construction; can move seasonally with humidity.

• Stile

  The vertical members of a sash or door panel frame.

• Solid-Core Door

  An interior door with a dense composite core for better sound dampening and a quality feel. A common worthwhile upgrade for bedrooms and…

• Stool

  The interior horizontal shelf at the bottom of a window, what people commonly call the inside sill.

• Smart Lock

  An electronic deadbolt with keypad, app, or auto-unlock control. Adds convenience and access logging; needs battery maintenance.

• Storm Door

  A secondary exterior door (often glass/screen interchangeable) mounted outside the entry door for added weather protection and ventilation.