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Pella® Impervia® Fiberglass Awning Window

Pella Impervia fiberglass awning windows are engineered for lasting durability. Our fiberglass material is rot-free, corrosion-free and one of the best insulating materials, helping to keep your home comfortable no matter the season. Hinged at the top and venting open at the bottom, awning windows are available with the patent-pending Easy-Slide Operator hardware.

  • Our fiberglass acts as a natural insulator from the outside elements for minimal heat and cold transfer.
  • Optional triple-pane glass and foam insulation for increased energy-efficiency.
  • Create bold designs from sleek profiles and more glass.
  • Product #400004

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Pella Impervia Awning Window Features

    • Strongest Material for Windows 9

      • Innovative Hardware and Lock Design

        • Resists Bends, Dents and Breaks

        Design Options

        Pella Impervia fiberglass products have a long-lasting factory powder-coat finish in your choice of five colors. Dual-color frames have White on the interior with Brown, Tan, Morning Sky Gray or Black on the exterior.

        Solid-Color Frames

          • black fiberglass frame

            Black

            • brown fiberglass frame

              Brown

              • white fiberglass frame

                White

                • morning sky gray fiberglass frame

                  Morning Sky Gray

                  • tan fiberglass frame

                    Tan

                  Material

                  • Pella Impervia products are made from our proprietary fiberglass material, the strongest material for windows, engineered for lasting durability.61
                  • Our long-lasting powder-coat finish meets AAMA 624, which is a highly-rated fiberglass coating.
                  • Exclusive thermoset material won't expand, warp or sag in summer heat, or shrink and turn brittle in harsh winter conditions.
                  • Secondary Secure Vent Lock for extra protection.

                  Downloads & Specifications

                  • impervia awning cob open
                  • impervia awning cross section with the easy slide operator
                  • pella impervia awning cross sections

                  Pella Impervia Awning Window Specs & Install Details

                  • Delivering unmatched strength and lasting durability with proven performance and sleek style
                  • Tested from -40ºF to 180ºF to endure extreme weather conditions
                  • Operable awning windows available in sizes up to 59-1/2” x 59-1/2”
                  • Fixed awning windows available in sizes up to 71-1/2” x 79-1/2”
                  • Performance class and grade LC50
                  Frame
                  • Overall frame depth is 3-1/4".
                  • Nominal wall thickness of Duracast® fiberglass composite members is .050" to .090" thick.
                  • Jambs contain factory-drilled installation screw holes on block frame.
                  Sash

                  Sash is Duracast fiberglass composite — five-layer pultruded fiberglass material, reinforced with a Pella patented interlocking mat.

                  Glazing System
                  • Quality float glass complying with ASTM C 1036.
                  • 11/16" dual-pane insulating glass sealed and bonded to sash.
                  • 1" Triple-pane insulating glass sealed and bonded to sash.
                  • High altitude glazing available.
                  Dual Weatherstripping
                  • Continuous, flexible ThermoPlastic Vulcanizate material in dual durometer design, compressed between frame and sash for positive seal on all four sides.
                  • Secondary ThermoPlastic Vulcanizate leaf-type weatherstrip between edge of sash and frame.
                  Easy Slide Operator
                  • Hardened, nickel-coated Steel worm and wheel gears.
                  • Harsh environment approved – ASTM B 117 salt chamber and debris cycling, 20,000 life cycle test approved.
                  • 5lb operational forces available on sizes when FW is ≤ 35" and FH is ≤ 72.5" or FW > 35" but ≤ 36" and FH ≤ 60".
                  Roto Operator Assembly
                  • Operator linkage, hinge slide, and hinge arms are 300 series stainless steel.
                  • Exposed fasteners are stainless steel.
                  • Hardware shall exceed 1,000 hours salt spray exposure per ASTM B 117.
                  • Unison Locking System—A single handle locking system operates positive-acting arms that reach out and pull the sash into a locked position

                  Frequently Asked Questions

                  About this Product

                  FAQs about Purchasing Online

                  See All Window FAQs

                  Awards and Certifications

                  • The Easy-Slide Operator, available on casement and awning windows, was awarded the 2021 Best Window & Door Product and overall Best in Show by the International Builders' Show.

                  • Our revolutionary Easy-Slide Operator window hardware has been named 2021 People’s Choice winner for Azure magazine's AZ award.

                  contemporary dining room with black impervia windows

                  Pella Impervia

                  Create a timeless design that will stand the test of time. Versatile design elements combined with sleek profiles and clean lines deliver a timeless style. Pella Impervia windows feature an up-to-date color palette, including Black, and optional grilles-between-the-glass to achieve the look and feel you desire.

                  Other Pella Impervia Products

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