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Special Shapes

Distinctive homes with a unique vision need windows to match. From direct glaze windows to unique geometric shapes to 90-degree corners, Marvin Special Shape windows go beyond the usual rectangle and add dimension and drama to a window design. Choose from various shapes to match your ideal window. Many special shape windows are available as in-sash windows to match your total window package, and many have the ability to operate.

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Features & Options
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When the unique design vision of your home requires a special focal point or added drama, Marvin Special Shape windows can be the perfect addition. Choose from thousands of geometric shapes.

Special Shape windows come standard as direct glaze units, but many shapes can be ordered as in-sash operating units

Available in a variety of glass and divided lite options

Energy efficiency is impressive, with 0.28 u-factor for clad products and 0.26 u-factor for wood products with Low E2 with argon.

This product is CE certified.


Ultimate Casement In-Sash Polygons match the sightlines of Marvin Ultimate Casement window products and are available in over 65 variations on many different shapes including triangular, trapezoidal and octagonal units. Many of the shapes are operating, with either right-hand or left-hand openings.

For increased design flexibility, Polygon shapes are available with narrow frames. Slim profiles and huge make Polygons ideal for the contemporary market and for replacement projects.

Ultimate Casement In-Sash Polygon

Ultimate Casement In-Sash Polygon

Narrow Frame Ultimate Casement Polygon

Narrow Frame Ultimate Casement Polygon

Standard Specifications

  • One-lite Low E2 with argon insulating glass
  • Available in StormPlus™ for coastal regions IZ2, IZ3 and IZ4
  • Bare wood interior
  • Exruded aluminum clad exterior (clad units)
  • All-wood brick mould casing (wood units)
  • 4 9/16" jambs

Professional Resources
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Installation Instructions

pdfWindow Rough Opening Prep and Flashing
pdfGeneral Paint and Stain (including link to retail stain formulas)
pdfPainted Interior Finish Touch Up Field Applied Instructions
pdfClad Window Installation Instructions
pdfClad Window Installation Instructions (in Spanish)
pdfWood Window Installation Instructions
pdfMarvin Window Rough Opening Measuring Instructions
pdfStructural Window Installation Instructions
pdfField Applied Jamb Extension
pdfClear Interior Finish Touch Up
pdfWood Ultimate Replacement Casement Round Top Polygon Supplemental Installation Instruction
pdfCURCARTPoly Replacement Casement Supplemental Installation Instruction
pdfClad Window Installation Instructions (in Japanese)
pdfMarvin Clad Corner Window Measuring Instruction
pdfClad BMC for Polygons
pdf3/8" Mull Reinforcement (Clad Ultimate Double/Single Hung is obsolete product)
pdfInterior Shades Care and Cleaning Information
pdfInterior Shade Ultimate Casement or Direct Glaze
pdfMarvin Interior Shade Ultimate Casement, Ultimate Double Hung and Direct Glaze Finishing Instruction
pdfMarvin Interior Shades Direct Glaze Measuring and Retrofitting Instruction
pdfMarvin Wood Grilles Grille Tack Field Installation Procedures
pdfMaking a Template for Special Windows
pdfAlternate Species Paint and Stain
pdfMarvin Window Sticker Example
pdfMarvin Window Full Frame Tear Out Installation Instructions
pdfStained Interior Finish Touch Up Field Applied Instructions
pdfLeveling the Sill Window and Door Supplemental Instruction
pdfClad BMC for Rectangular Windows and Doors
pdfInstallation Bracket
pdfApplying Structural Brackets
pdfStructural Masonry Clip Instructions
pdfClad Flat Casing
pdfSDL Field Application
pdfWindow and Door - Europe
pdfNailing Fin/Corner Gasket Installation Instruction

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