tender for supply, dismantling, erection and commissioning of id fan and ss perforated screen for fbd , 1.complete id fan with casing and structure suitable for 90kw motor having capacity 100000-110000 cmh complete in all respect without drive only, fan should be single axial to maintain adequate draft in the system to support the release of input air and dust. fan draft should be 450 mmwc. modification of suction and delivery pipe also in the scope of bidder. 2. ss 304 perforated plates 56 nos (approx. 470/500 mm width each and length- 2000mm each). the screen with forword thrust apertures with 1mm -1.2 mm opening to avoid back pressure in chambers.