With so many more efficient options on the market today, more homeowners are choosing to replace their old windows with new, energy-saving models. While replacement windows offer many benefits, they won’t likely be the exact same depth as the original window. That’s where jamb extenders come into play. No Rot® Jamb Extenders are prefinished in bright white and available in an array of sizes. Made of 100% Cellular Vinyl PVC®, No Rot® Jamb Extenders are also more energy efficient than wood. Unlike wood or drywall, Jamb Extenders are not affected by moisture, greatly reducing the maintenance required for upkeep.