There are various grades of vinyl perimeter fencing from residential to commercial to imported products. Residential grade is typically the cheapest and thinnest fence material you can buy. Commercial grade vinyl fences are of higher quality and used by the contractor trade. Imported products are often suspect as manufacturers and industry standards are unknown. Quality vinyl fencing made in the USA that meets and exceeds ASTM F964 industry standards, which are set by relevant industry professionals, are the best quality vinyl fences you will find.