The requirement comes from NFPA 33:
9.4.7 Sprinklers shall be protected against overspray residue,
either by location or covering, so that they will operate quickly
in event of fire.
9.4.7.1 Sprinklers shall be permitted to be covered only by cellophane
bags having a thickness of 0.08mm(0.003 in.) or less or
by thin paper bags. These coverings shall be replaced frequently
so that heavy deposits of residue do not accumulate.
Does anyone have any info on where you can purchase these particular bags?
Thank you very much in advance!!
9.4.7 Sprinklers shall be protected against overspray residue,
either by location or covering, so that they will operate quickly
in event of fire.
9.4.7.1 Sprinklers shall be permitted to be covered only by cellophane
bags having a thickness of 0.08mm(0.003 in.) or less or
by thin paper bags. These coverings shall be replaced frequently
so that heavy deposits of residue do not accumulate.
Does anyone have any info on where you can purchase these particular bags?
Thank you very much in advance!!