DT99628RH-QZ Hot Dip Galv Ring Shank 2.8x63mm Qty:1100Service Class 3 - Unprotected outdoor environment or exposed to weather Why is Eurocode 5 certification important?Eurocode 5 regulations apply a performance standard to the type of nails used in timber framing or roofing. BY JULY 2013, ANY JOBSITE WHICH DOES NOT COMPLY WITH EC5 REGULATIONS WILL BE IN BREACH OF EUROPEAN LAW EC5 Nails fall into 3 service classes:Service Class 1 - Heated indoor environmentService Class 2 - Unheated indoor environment/protected outdoor environmentService Class 3 - Unprotected outdoor environment or exposed to weatherDEWALT Nails fully comply with EC5 regulations – and each box is clearly marked and colour coded according to service class