Interstate's Bow and Bay windows elegantly add light and sun to any home.

Our products and processes emphasize energy savings – and that means we consume less energy to minimize the CO2 released into our environment.

Our buildings save energy by utilizing in-floor radiant heating during off-peak energy hours and by using motion controlled lighting.

Our processes conserve resources – like filtering and reusing glass wash water for glass rinsing, and recycling our vinyl and glass scrap created during the fabrication process. And of course, we have a recycling program for metals, cardboard and paper.

Interstate belongs to a voluntary energy cooperative that monitors and helps reduce energy usage during times of peak demand. We are helping to protect our community from blackouts, to keep energy rates stable and to help the environment by reducing reliance on peaking power plants.


Bow/Bay Frame Options:

VVB –  Vinyl Exterior Capping – Vinyl Interior Trim – Birch Head & Seat Board

VVO –  Vinyl Exterior Capping – Vinyl Interior Trim – Oak Head & Seat Board

VPB –  Vinyl Exterior Capping – Pine Interior Trim – Birch Head & Seat Board

VOO –  Vinyl Exterior Capping – Oak Interior Trim – Oak Head & Seat Board

Interstate’s Bow and Bay windows offers a unique weep system that directs water away from channels. It also has a maintenance free vinyl-clad exterior, available in white, adobe and bronze. With the optional copper roof, this window will bring a little bit of class to your home.


  • 3/4” #1 Eastern White Pine struts allow for a full spectrum of bow and bay designs.
  • 3/4” #1 Eastern White Pine end jambs (has secondary cover to hide unsightly installation nails and screws).
  • Two interior finishes – vinyl or all wood mullions, end fillers, and stops.
  • Unique weep system directs water away from channels.
  • 1/4” all-threaded steel rods between struts tie head and seat boards together for added strength.
  • Foam sealant between struts for added energy efficiency.
  • Maintenance free vinyl-clad exterior – available in white, clay and bronze.
  •  All plywood insulated head and seat board in birch or oak.
  • Turnbuckle support kit includes chain, turnbuckles and hooks recommended for added strength.
  •  Low pressure polyurethane foam sealant between struts for best thermal performance.
  • Available with stain matching head, seat board and edge banding.
  • Fully assembled shell.
  • Windows are purchased and easily installed separately into frames.
  • Optional custom metal roofs available. Contact us today!