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Pella® Impervia® Fiberglass Sliding Window

Pella Impervia fiberglass sliding windows provide outstanding resistance to water, wind and outside noises – while delivering energy efficiency, security and ease of operation. Made from our proprietary fiberglass material, the strongest material for windows, sliding windows glide open and closed along a track.16

  • Unique weep system on frame provides exceptional water management.
  • Exterior screen allows for easy ventilation with optional InView™ screen cloth that enhances the light in your home.
  • Designed with a double-roller system for smooth, long-lasting operation.
  • Product #400005

Talk to a Pella Rep for Pricing

Pella Impervia Sliding Windows Features

  • Strongest Material for Windows 9

  • Tested For a Lifetime of Everyday Use

  • Durable Three-Way Corner Joints

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

                      Design, Performance & Size Tables

                      Specifications

                      2D Cross Section

                      2D Elevation

                      3D & BIM

                      Product Literature

                      • large impervia sliding window with top row grilles
                        • cross section for impervia sliding windows

                          Pella Impervia Sliding Window Specs & Install Details

                          • Made from the strongest material for windows, our proprietary fiberglass material9
                          • Tested from -40ºF to 180ºF
                          • Two- and three-panel options with equal vent, 1/3 and 1/4 vent
                          • Two-panel sliding windows available in sizes up to 71-1/2” x 71-1/2”
                          • Three-panel sliding windows available in sizes up to 107-1/2” x 71-1/2”
                          • Performance class and grade LC30-LC50

                          Frame
                          • Overall frame depth is 3".
                          • Nominal wall thickness of Duracast fiberglass composite members is .050" to .070" thick. 
                          • Sill is fitted with weep valve assemblies. 
                          Sash

                          All sash members have mitered corners bonded with corner lock and sealed with injected polyurethane adhesive.

                          Weatherstripping

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

                          Glazing System
                          • Quality float glass complying with ASTM C 1036.
                          • 11/16" insulating glass sealed and bonded to sash.
                          • High altitude glazing available.
                          Hardware
                          • Vents are equipped with two nylon roller housings containing two acetal rollers each. Vent-panel sash is fully operable for ventilation. Rollers may be removed for cleaning and/or maintenance.
                          • Two locks are installed on units 37" high or greater.
                          • Locks are zinc die-cast, self-aligning cam action factory-installed on the interlocker 
                          Additional Hardware options
                          • Optional limited opening device nominal 3" opening. Off-white rubber bumper to be installed at the head of the venting unit. 
                          • Optional window opening control 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.

                          Frequently Asked Questions

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                          contemporary dining room with black impervia windows

                            Pella Impervia

                            Combine the extreme durability of our proprietary fiberglass material with the beauty and energy efficiency you expect from Pella. Windows made of our exclusive fiberglass provides superior strength, which enables thinner profiles and more glass.9 Create bold designs from sleek profiles with our intentionally designed products.

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                              • Exceptionally energy efficient

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