Modern Home Products (MHP), founded by Walter Koziol in the 1950s, invented the first outdoor gas grill and brought it to market in 1960. MHP was the first company to offer affordable residential outdoor gas lighting to the homeowner. This business grew and inspired Koziol to explore other ways to use gas outdoors. MHP produced the first outdoor gas barbecue grill, called Perfect Host, a 22½-inch round steel grill on a portable cart supplied with either natural or liquid propane gas. By 1964 the first rectangular grills with rust-free solid aluminum construction were produced, and this design continues to be the industry’s most popular.