Heat Block seals drafts by filling gaps around windows, helping reduce energy use and keep indoor temperatures stable for comfortable living or working spaces. Key benefits Energy savings: blocks drafts to lower heating and cooling costs. Consistent comfort: maintains steady temperatures for rooms throughout the year. Extensive compatibility Fits casement and roof windows, suitable for multiple window styles in homes and workplaces. Convenient to install Peelandstick design; quick setup and easy removal. Durable construction density sponge resists deformation and temperature changes for reliable, longlasting sealing around window units. Use scenarios Living room or bedroom with drafty windows to improve warmth in winter and reduce cooling needs in summer. Small office or workspace with exterior windows to maintain a stable climate and enhance comfort. Attic or loft with a roof window to prevent heat buildup in warm months and heat loss in cold months.