Pella Impervia Fiberglass Double Hung Window
Pella Impervia Double Hung Windows offer tilt-in sashes for easy cleaning, superior ventilation, energy efficiency, and durable fiberglass performance.
Product Details
Pella Impervia® Double‑Hung Window
The Pella Impervia® Double-Hung Window is engineered for strength and performance. Made from a proprietary five-layer fiberglass composite—tested to withstand extreme temperatures and relentless weather—it’s the ideal choice for homeowners seeking long-lasting durability with a timeless aesthetic.
Features & Benefits
Unmatched Durability: Made with Pella’s exclusive Duracast® fiberglass—stronger than vinyl and resistant to warping, cracking, and corrosion.
Low-Maintenance Finish: The powder-coat finish meets AAMA 624 standards, resisting fading and chalking without the need for repainting.
Energy Efficiency: Available with dual- or triple-pane glass options, Low-E coatings, and argon gas for insulation that meets ENERGY STAR® guidelines in all 50 states.
User-Friendly Operation: Both sashes tilt inward for easy cleaning, and a cam-action lock improves sealing and security.
Custom Styling: Choose from five exterior colors (Black, Brown, Tan, Morning Sky Gray, White) with matching or dual-color options and grille styles between the glass for a clean look.
Why Choose Impervia Over Vinyl or Wood?
While vinyl windows can warp or discolor under harsh conditions, and wood windows require frequent upkeep, Impervia offers a superior alternative. It combines the look of painted wood with the strength of fiberglass—without the maintenance headaches. This makes it a standout choice for homeowners wanting lasting beauty and performance without compromise.

