English to Spanish Tech/Engineering Cinema, Film, TV, Drama Theatre

From a series of instructions to stage crew of a play:

Show gauze in staircase 2.

The gauze here I think refers to: Flat curtain of fine mesh mosquito netting or similar fabric, either painted or unpainted, which when lit solely from the front appears to be opaque, but when lit from behind becomes transparent. It is used for transformation scene or other illusions. A fabric known as "Sharks tooth gauze" is also used for this purpose. (Glossary of theater terms)

Any ideas about how to say this in Spanish?