In 2002, ESS Energy Product, Inc. (then Energy Sentry Solutions, Inc.) introduced a new product offering to insulate and seal attic pull down ladders. While there were a number of existing products already available, the ESS kit (called the Energy Guardian® and the subject of a pending patent application) has some unique characteristics which have come to distinguish it from any other alternatives. First, the kit offered a revolutionary air seal with a seemingly simple new and innovative art form - the lip of the lid fit into the frame of the kit to form a revolutionary air seal. It also added a big benefit in superior air sealing results. Within a year, ESS used the same patented design for kits to insulate and seal attic push up panels or hatches. By 2005, this same patented design was also applied to create a kit to fit over permanent stairways. A different, non-gravity patented based design lead to the knee wall kits in 2006. Business has grown rapidly, experts have endorsed the kits over any other measure and large government agencies, major utility companies, builders, contractors and many others have made The Energy Guardian® Kits their standard solution to the energy conservation issues. On January 26, 2010, the design of The Energy Guardian® Kits became protected under United States Patent Number 7,650,722 B1. ESS has other patents related to the design of The Energy Guardian® Kits pending.