Lightning protection of equipment assemblies (ventilation and air conditioning units) located on facilities. Mounting with brackets (ordered separately) directly to protected devices or railings. For installation of wall and chimney spiers, we recommend the use of holders: holder type 5 AN-84G, holder type 5a AN-84L40. Diameter 1=10mm, Diameter 2=16mm, Diameter 3=--mm, Diameter 4=33.7mm