Volumetric Window Size

Hi, I tried to change the default size for a volumetric window but It looks like this window has a maximum width value. Is it true?

WindowGroup(id: "id") {
                ItemToShow()
            }.windowStyle(.volumetric)
                .defaultSize(width: 100, height: 0.8, depth: 0.3, in: .meters)

Here I set the width to 100 meters but It still looks like about 2 meters