Windows & Walk Doors

You have options when it comes to windows and walk-in doors on your custom pole building. Greiner Buildings utilizes high-quality windows and walk doors and has a high variety to choose from.

Walk Door Options:

  • Less expensive, but good—95 Series walk door with an insulated panel, dedicated threshold or 4-way universal threshold available. 16 gauge jamb and 24 gauge roll-edge panel.


  • High quality, high value—20 Series walk door w/ stainless steel hinges, dedicated threshold, 16 gauge jamb and 24 gauge panel with a full-rolled edge, bulb seal and 3 fin seals. Available in 4 standard colors: Bronze, Hickory Moss, Polar White, Chocolate Brown.


  • New this year: All walk doors have available a foam-core insulated frame for extra protection against the elements. Great for all our buildings.

Window Options:

  • Our windows are designed specifically for post frame buildings, in that they are a one-piece unit installed over metal cladding. No J-trimming is required, giving a tighter seal and a cleaner look.


  • Windows have a wide variety of color options, including standard options available in Bronze, Hickory Moss, Polar White, Chocolate Brown. Other custom colors for the outer trims are available, inquire for details.

The Greiner Difference

Quick Quotes

Because your time is important.

Better Materials

Because you want a building that lasts.

Because craftsmanship matters.

Complete Building Services

Because you don't need any stress.

Iowa and Illinois Accredited NFBA Builders. Washington, Clive, Kewanee, Quad Cities, Muscatine, Burlington, Des Moines, Ankeny, Winterset, Cedar Rapids, Iowa City, Solon, North Liberty, Mount Pleasant, Fairfield, Pella, Tipton, Williamsburg, Newton, Keota, Sigourney, Hiawatha, Marion, Columbus Junction, Wapello, Oskaloosa, Knoxville, Marshalltown, Altoona, Urbandale, West Des Moines, Bettendorf, Davenport, Ames, Kalona, Riverside, West Liberty, Princeton, Geneseo, Galesburg, LaSalle, Dixon, Rock Island, Moline, Wyoming and Sterling. Iowa and Illinois Quality Built Post Frame Pole Barns.