One key factor affecting the energy efficiency of a window or door is the spacer system that is located inside the sealed insulating glass unit. The spacer system is the material that separates the panes of glass. Many materials can be used to formulate a spacer system, but by far one of the most effective for improving energy efficiency is the MPG (Maximum Performance Glass) spacer system offered by Sprouse. All materials used in the system are non-metal – thereby lowering energy conduction rates and reducing condensation problems. The MPG spacer system is used in both the MPG and MPG Plus™ glass packages.

For maximum thermal performance, the Invisiline™ Spacer System reduces thermal conductivity by up to 45%. This high performance is achieved by eliminating all metal and replacing over 60% of the spacer profile with air. The patented design features a unique composite laminating technology that results in superior thermal and durability performance. Independent, third-party testing has proven that Invisiline™ offers the lowest U-value rating and highest condensation resistance compared to other spacers. This translates to the most annual energy savings year round.