NEN EN 13125 : 2001

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Shutters
   4.1 Criteria for classes allocation
   4.2 Minimum classes admitted without assessment
   4.3 Conditions of allocation of class 5
5 External blinds, internal blinds, blinds incorporated
   into the glazing - Allocation of air permeability
   classes
   5.1 Criteria for class allocation
   5.2 External blinds
   5.3 Internal blinds and blinds incorporated into the
       glazing
   5.4 Blinds with one side with low emissivity coating
6 Presence of a top box (case of roller shutter)
   6.1 Top box independent of window frame (roller
       shutter for subsequent installation for instance)
   6.2 Top box installed inside the masonry (see
       figure 3a) or with the framing (see Figure 3b)
ANNEX A (normative) Thermal resistance of PVC profiles
         curtain
ANNEX B (informative) Usual values of peripheral gaps
        for interior blinds and blinds incorporated
        into the glazing

Refers to the classification criteria of shutters and internal and external blinds in relation with their air permeability for the calculation of additional thermal resistance given by these products.