NF E31-520/A1*NF EN 1596/A1:2004 Specification for dedicated liquefied petroleum gas appliances - Mobile and portable non-domestic forced convection direct fired air heaters.
2004NF E31-520/A1*NF EN 1596/A1:2004 Specification for dedicated liquefied petroleum gas appliances - Mobile and portable non-domestic forced convection direct fired air heaters.