Which use two pieces of glass, what the glass processor can do is made of tempered glass, they can support heavy pressure from the top, but it’s might meet some problems, when glass break, still have big fall down ricks. The cost cheaper.

This type combine three pane of glass with two aluminum spacer, with very good temperature control porformance, suitable for winter, or some area very cold, or in a high altitude areas, or plateau areas use, but still have a problem with breaks. The cost at middle.

It’s a high safety items. Which normall have one piece of laminated glass, which can be float laminated glass, tempered laminated glass, or heat strengthened laminated glass. It’s a high performance for support and safety, even though the glass have break ricks, they can not fall down, as there have PVB film or SGP film can make the break pieces on the film. The cost will be higher than normal IGUs.

It’s a nice item for decoration, according to designer or owner’s ideas, we can realize the shapes you want.

It’s depends on the support, considering laminated IGUs or multi-layers laminated IGUs to make sure safety.