supply of pa system pa system, supply, installation, testing and commissioning of pa system for lhb tre asury van coaches generally conforming to rcf specification edts-173, rev-b, corr -1, type-iii. ( i ) si. no.4 of scope of supply of corrigendum 1, the speaker quantity shall be 4 nos instead of 11 n os. ( ii ) a suitable stainless-steel enclosure with door lock and epdm rubber gasket, cable entry glands to accom modate the amplifier along with necessary mounting ss hardware. the enclosure shall be powder coated to spe cification: icf / md / spec-091 with minimum thickness of 50 microns to ral 090 9005 to bone white. the oga and mounting arrangement shall get prior approval from icf. [ warranty period: 30 months after the date of deli very ] => limited