supply of set of top and bottom for machine room blower duct. set consists of two items. (1) top gasket as per drg. no.c/ els/ lgd/ rc/4/19,alt.1- 01 no. (2) bottom gasket as per drg. no.c/els/lgd/rc/4/20, alt.1-01 no. note: clw approved sources shall only participate in the tender or supplier offers shall be considered with valid tender specific authorisation certificate from clw source shall be submitted along with their offer.set of top and bottom for machine room blower duct. set consists of two items. (1) top gasket as per drg. no.c/ els/ lgd/ rc/4/19,alt.1- 01 no. (2) bottom gasket as per drg. no.c/els/lgd/rc/4/20, alt.1-01 no. note: clw approved sources shall only participate in the tender or supplier offers shall be considered with valid tender specific authorisation certificate from clw source shall be submitted along with their offer.,set of top and bottom for machine room blower duct. set consists of two items. (1) top ga sket as per drg. no.c/ els/ lgd/ rc/4/19,alt.1- 01 no. (2) bottom gasket as per drg. no.c/els/lgd/rc/4/2 0, alt.1-01 no. note: clw approved sources shall only participate in the tender or supplier offers shall be c onsidered with valid tender specific authorisation certificate from clw source shall be submitted along wit h their offer. [ warranty period: 30 months after the date of delivery ] ]