tender for supply of mild steel ( ms ) push button box for local control station and mushroom head ( stop ) push button with lock & key ( with 2 keys, without element ) , press lock & key to release.; 1 supply of mild steel ( ms ) push button box for local control station and mushroom head ( stop ) push button with lock & key ( with 2 keys, without element ) , press lock & key to release. 2 ms push button box ( l – 195mm, b – 250mm, h – 300mm &mounting – wall ) for local control station including i ) 1 no. start push button of dia - 30.5mm size ( green colour ) with 1 no. elementii ) 1 no. mushroom head stop push button of dia - 30.5mm size ( red colour ) withlock and key ( with 2 keys ) ( press lock and key to release ) with1 no. element, iii ) 10 sqmm terminalblocks – 6 nos. and iv ) epoxy powder coated canopy with control wiring. 3 mush room head ( stop ) push button with lock and key ( with 2 keys, without element ) ( press lock and key to release ) size – 30.5mm, colour – red & make:avon or equivalent