... 3. clear span: 15m, 18m, 20m, 25m, 30 marquee tent This is a newly-designed tent. It’s much ... 21m, 25m, 30m.2) Length: no limite, extended by +5m.3) Bay distance: 5m4) Eave height: 4m2. FRAME PART1) ... ) The roof and sidewall fabric cover are made of double pvc coated polyester textile.2) The fabric is ... M2, Grade B1.4) The weight of fabric is from 660g/sq.m to 850g/sq.m. big marquee tent of curved shape