Ukubonisa umlingani
1. Ukusebenza okungangeni manzi kungaphezu kuka-3,000 mmH2O ngaphansi kwezindinganiso zaseMelika (ASTM).
2. Ukungena komoya kungaphezu kuka-3,000 g/24h m2 ngaphansi kwezindinganiso zaseMelika (ASTM).
3. Zonke izikhala ziqinisiwe.
4. Amaphakethe anomugqa ongabonakali anezikhiyezi ezingangeni manzi, ahlotshiswe ngemigqa egolide ebanzi.
5. Imibala emibili ye-piping nxazonke nejazi.