Verified from the manufacturer’s own documentation · last checked September 19, 2026
| Manufacturer | Pella |
|---|---|
| Series | Defender Series |
| Frame material | Impact-resistant vinyl with multichambered frames and insulating air chambers; a precise-installation frame with pre-drilled holes for faster, more secure installation |
| Styles / configurations | Impact-resistant vinyl in common operating styles (single- and double-hung, casement, awning, sliding and picture are offered across Pella's impact vinyl range). Confirm the exact current Defender style list and the product approvals for your jurisdiction on Pella's Defender Series page |
| Glass options | Laminated, insulated impact glass with argon between the panes; part of Pella's InsulShield glass collection. Laminated glass blocks 99.7% of UV rays and adds noise and intrusion resistance |
| U-factor | Not published as a single line-wide range; follows the glass package. Check the NFRC label on the exact unit quoted |
| SHGC | Not published as a single line-wide range; follows the glass package. Check the NFRC label on the unit quoted |
| VT | Not publicly specified |
| ENERGY STAR | Pella offers ENERGY STAR certified options; impact-glazing performance follows the selected package and climate zone |
| NFRC certification | NFRC-certified performance follows the configuration; impact and coastal ratings are documented through Florida Product Approvals and applicable code reports |
| Warranty | Covered by Pella's vinyl window and patio door limited warranty (the Pella Limited Lifetime Warranty for vinyl): non-glass materials and workmanship carry a Limited Lifetime Warranty for the original purchaser in an owner-occupied single-family home; on transfer of ownership, or when the buyer stops occupying the home, it becomes a transferable 10-year limited warranty; labor is included only within two years of the date of sale. Read the current written warranty before purchase |
| Positioning | Pella's impact-resistant vinyl line, engineered to withstand hurricanes and increasingly stringent coastal requirements, with added noise reduction, energy efficiency and intrusion resistance. Positioned below the Hurricane Shield Series, which carries Pella's most stringent HVHZ (Miami-Dade / Broward) approvals |
| Price position | Mid-range impact vinyl; below the Hurricane Shield Series |
| Installation | New construction and replacement in impact/coastal projects; custom, made-to-order, sold and quoted through Pella showrooms and dealers |
Notes
Impact-resistant vinyl. Impact/coastal approvals are jurisdiction-specific (Florida Product Approvals; HVHZ where applicable) — verify the exact approval for the unit and location. U-factor, SHGC and VT follow the glass package
Sources
Pella's own Defender Series pages — pella.com/ideas/windows/defender-series/ and /shop/windows/defender-series/ (impact-resistant vinyl, laminated impact glass, precise-installation frame); Pella at Lowe's for the Pella vinyl Limited Lifetime Warranty statement shared across the vinyl lines; Pella vinyl window and patio door limited warranty PDF (media.pella.com) for transfer and labor terms