First United Door Technologies introduced the Laredo, an all-steel, overhead sectional garage door to its SteelPanel product line. The 25-gauge steel-face skin and 25-gauge steel backing deliver a sandwich door rugged enough to please builders, but still offer clean lines to gratify homeowners. The all-steel backing replaces the vinyl typically used on the inside of garage doors. Another benefit is the increased insulation properties. The sandwich door increase the R-value to 9+, compared to an average R-value of 6 for vinyl backed doors.