Prefabricated Modular operation theatre wall and ceiling construction by GI/PPGI/HPL/SS sheet with PUF sandwiched panels and silicone gel is used as joint filer. Metallic putty and primer use to be applied on fabricated walls and ceiling for seamless joint free wall and ceiling. Water based antibacterial and anti fungal paint is used to prevent bacterial growth. Clean air supply management is conducted through OT plenum (Laminar flow system).