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Pella® Impervia® Fiberglass Single-Hung Window

Made from the strongest material for windows, Pella Impervia single-hung windows provide lasting durability and sleek, timeless style.16 They feature a moveable bottom sash for ventilation and a fixed top sash. Our powder-coat finish will never need to be repainted or refinished. Achieve your design vision with color options including Black.

  • Tested beyond industry standards, from -40ºF to 180ºF so you can trust our fiberglass material to perform on the hottest and coldest days on the year.
  • Equal sightlines provide a clean, consistent aesthetic unlike other single-hung designs that trade off aesthetic details.
  • Secured with corner locks, metal fasteners and injected with sealant for added strength, security and reliable water performance.
  • Product #400002

Configuration: 1-wide

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Pella Impervia Single-Hung Windows Features

    • Strongest Material for Windows 9

      • Resists Bends, Dents and Breaks

        • Withstands Extreme Heat and Cold32

        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

                  • Black impervia single-hung window
                  • cross section drawings for impervia single-hung windows

                  Pella Impervia Single-Hung Window Specs & Install Details

                  • Made from our proprietary fiberglass material, the strongest material for windows, engineered for lasting durability9
                  • Can handle the most extreme heat and cold9
                  • Strong, zinc die-cast locking mechanism for enhanced durability and water resistance
                  • Single-hung windows available in sizes up to 47-1/2” x 79-1/2”
                  • Performance class and grade LC40-LC50

                  Frame
                  • Overall frame depth is 3".
                  • Frame corners are mitered, joined and bonded with corner lock and mechanically fastened with injected polyurethane adhesive.
                  • Sill is fitted with weep valve assemblies.
                  Sash
                  • Sash is Duracast fiberglass composite – five-layer pultruded fiberglass material reinforced with a Pella patented interlocking mat. 
                  • All sash members have mitered corners bonded with corner lock and sealed with injected polyurethane adhesive.
                  Weatherstripping

                  Sash is weatherstripped around the perimeter with a dual fin-type pile weatherstrip.

                  Glazing System
                  • Quality float glass complying with ASTM C 1036.
                  • 11/16" insulating glass sealed and bonded to sash.
                  • High altitude glazing available.
                  Hardware
                  • Optional limited opening device available for field installation on vent units in vinyl to match interior of unit; nominal 3-3/4" opening.
                  • Optional window opening control device available for field installation. Device allows window to open less than 4" with normal operation, with a release mechanism that allows the sash to open completely. Complies with ASTM F2090-10.
                  Screens
                  • Half-size with black vinyl coated 18/16 mesh fiberglass screen cloth complying with ASTM D 3656 and SMA 1201.
                  • InView™ Screen - Half-size with black vinyl coated 18/18 mesh fiberglass screen cloth complying with SMA 1201. Set in aluminum frame and fitted to outside of window.

                  Frequently Asked Questions

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                  contemporary dining room with black impervia windows

                  Pella Impervia

                  With proven performance and sleek, timeless style, Pella Impervia windows are ready to handle virtually anything life throws at them. These windows provide superior strength when compared to aluminum, standard fiberglass, wood and vinyl, so you can trust them to last.9

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                    • Exceptionally energy efficient

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