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What is the difference between V series and I series?

V Series: Visible Frame Glazing Wall

I Series: Invisible Frame Glazing Wall

The difference between V series and I series can be identified by their names.

However, the biggest difference is their appearances that we can see from the picture: I series is with 20 mm painted frame in color white (color can be customized), V series is with aluminum frame.

In addition to appearance, their glass setting techniques are also different: V series: Glass, PVC sealants and aluminum component, I series: Glass, 3m glue and aluminum component.

Functionally, V series has fire resistance of Class C for 60 minutes and sound insulation of 40 dB; I series has sound insulation of 52 dB.