Providing and fixing M.S. sheet hollow pressed frame of doors, windows, C. windows, etc. (chowkat only) of 20 SWG welded with M.S. flat 6"x 11/4" x 1/8" (150 mmx30mmx3mm) M.S. holdfast 9"x1"x1/8" (225mmx25mmx3mm) welded/screwed 4" (100 mm) long iron hinges, in eluding filling chowkat with ceme nt sand mortar 1:8 and embedding holdfast in cement concrete 1:2:4, complete in all respects: a) single rebate b) double rebate