Providing and fixing factory made ISI marked partially insulated metal fire rated doorset assembly, for staircase / exit pathway and refuge areas applications, consisting of galvanized iron steel frame and single leaf shutter including necessary hardware accessories, conforming to FD 120 PI classification of IS 3614 :2021 with fire rating of 120 minutes integrity and 30 minutes insulation. The door frame and shutter shall be made out of minimum 1.20 mm thick GI Sheet with minimum 120 GSM Zinc coating as per IS: 277. The entire fire rated doorset assembly shall be tested in latched condition as per IS 17518 (Part -1): 2022 Frame: The farme shall be of minimum size 90 x 60 mm with grooved profile to take appropriate fire rated smoke seal, having mitred cut joint (self tab/screwed assembled at site) and provided with appropriate reinforcement suitable for taking hardware and flush fixing as per IS 4351. The smoke seal material shall be of EPDM tested in accordane with ASTM E-84 of minimum size 10x 4mm, fixed within the inbuilt groove or stuck with adhesive on the entire perimeter of the frame. The door frame shall be fixed to the three sides to masonary wall opening with CSK/Hex headed fastner of minimum 8 mm dia size and minimum 80mm long with 8mm dia Polyamide sleeves @ 5 numbers at each on vertical sides and 2 numbers on horizontal top side. Door shutter: The double skinned single leaf partially insulated fire rated door shutters shall be consisting of minimum 50 mm thick and having box like structure, slots cut and holes punched, for fixing of hardwares with stiffners as per IS: 16074 including resin bonded mineral wool / ceremic wool infill material of minimum density 96 kg/cum. Door leaf shall be provided with vision panel, having maximum area of 0.06 sqm, of 120 minute fire rated minimum 6 mm thick clear borosilicate glass pane fixed with clip-on arrangement and fire rated ceramic tape having minimum size 13x2 mm to be fixed all around the glass on both the sides. The intumescent seal of minimum size 15x1.5 mm or of size as per test evidence shall be fixed on all the three edges of the door leaf. The door shutter shall be mounted on the frame with SS 304 grade ball bearing butt hinges as per EN 1935 : 2002 or butt hinges as per IS 12817, of minimum size 100x75x3 mm @ 5 numbers hinges upto 2400mm height or as per test evidence, whichever is more, fixed with M6 25 screws. All doors shall be factory prepared for receiving appropriate hardware and provided with necessary reinforcement for hardware accessories. Hardware Accessories: Fire doorset assembly shall be provided with one number of Single point Panic push bar (cross bar) device of desired finish as per EN 1125 and one number external trim including half cylinder of 42mm long with one side key as per EN 1125. One number heavy duty door closer of size EN 3-5 with standard arm, of desired finish (suitable upto 1250 mm door width) conforming to IS 3564/EN 1154. Finishing: Both frame and door shutters shall be factory finished with polyester powder coating of minimum 50 microns thick and shall have passed salt spray test as per IS:13871 of approved colour and shade all complete as per manufacturer's specifications and as per direction of the Engineer-in-charge. Installation: The hollow space in the door frame shall be filled / injected with fire rated self extinguishing type polyurethane foam (PUF) after installation at site of work. The rate shall be inclusive of complete fire rated door assembly, supply and installation by the approved manufacturer.