The transparent PVC curtains made from clear standard grade strips are used in plants where the air temperature varies between -5 °C and 50 °C.

The standard grade strips maintain the ideal consistency and flexibility at this interval. Approximately below -5 °C they begin to harden and freeze. Above 50 °C they begin to soften.

They are ideal for openings in the interiors, halls, separation of heated parts of warehouses, but also for entrance gates between the exterior and the interior, where at least on one side the air temperature does not drop below 0 °C even in winter.

The standard grade strip PVC curtains are also usable in fridges and refrigerator cars or reefers, and cold stores. In practice, these curtains are useable from about -5 °C to 50 °C, but below the freezing point the strips begin to harden, making it difficult to cross them, and in extreme cases (-15 to -25 ° C) they may break off.