4340 Picture Window

MI Windows' 4340 vinyl picture window offers superior style and traditional craftsmanship with features like beveled exterior edges and a welded vinyl mainframe. The slim sight lines, numerous shape options, and trendy styling of this vinyl picture window make this a window with a view. The 4340 picture window is sure to bring the world into your home with style.

In addition to unobstructed outlooks, the 4340 picture window offers high performance for homes in demanding locations. And with energy-efficient features like a warm-edge spacer system and insulated glass, the 4340 vinyl picture window combines unmatched aesthetics with unrelenting performance.

Energy Star ®


  • North-Central
  • South-Central
  • Southern
  • Multi-chambered construction
  • Brickmould profile
  • Slim sight lines for a modern appearance
  • Warm edge spacer system

Product Details:
  • 3-1/4" Frame Depth
  • 3/4" Insulated Glass
  • Available in 1/4" size increments
Performance Ratings:
  • U-Value: 0.28-0.47
  • SHGC: 0.21-0.65
  • VLT: 0.40-0.68
Glass Options:
  • Low-E
  • HP Low-E
  • Tempered
  • Obscure
  • Argon Gas Enhanced
Interior Colors
  • White, almond, and clay extrusion
 Exterior Colors
  • White, almond, and clay extrusion
  • Black matte and bronze paint

Color limitations may exist. Refer to product literature for more details.

View Color Options Data Sheet

Grid Options:
  • 5/8" flat Grids-Between-the-Glass
  • 7/8" flat Grids-Between-the-Glass
  • 11/16" sculptured Grids-Between-the-Glass
  • 15/16" sculptured Grids-Between-the-Glass
  • 1-1/8" simulated divided light
  • Color Match

*Product availability varies by state and region. 
Consult your local building code for product approvals pertaining to your specific project.  Please contact MI for assistance.