bids are invited for extenstion of existing prefabricable shelter , three track windows two glass and one mess of powder coated alminum of size 5 by 4 ft , three track windows two glass and one mess of powder coated aluminum of size 4 by 4 ft , openable powder coated aluminum widow size 4 by 2 ft , main entrance double door of complex with upvc frames and toughened , upvc frame back side door with toughened glass 7 point 5 by 3 ft , upvc frame sliding doors with toughened , cemnted vitrified tiles red colour 1 ft by 1 ft work in front and rear of shelter , cemented vitrified tiles red colour 1 ft by 1 ft work in front and rear of shelter , 2 by 2 ceiling light , stainless steel 304 grade grill pipe work covering of outside total quantity : 1672