supply of set of complete diaphragm , set of complete diaphragm with g.f. nylon center disc and gasket ring for m/s e versure make air flow relay. one set consisting of 05 items (08 nos) -(1) qvmt- 02 nos./set as per eversure drg. no. eee/afr/05(rev-1) item ref. no. 1, (2) qvsl -02 nos/set as per eversure dr g. no. eee/afr/05(rev-1) item ref. no. 1, (3) qvrh -01 no./set. as per eversure drg. no. eee/afr/0 5(rev-1) item ref. no. 1, (4) qvsi- 02 nos./set. as per eversure drg. no. eee/afr/06(rev-1) item re f. no. 1, (5) qvrf- 01 no./set. as per eversure drg. no. eee/afr/07 item ref. no. 1. [ warranty period: 30 months after the date of delivery ] ]