Door fitting BIS certification guarantees Indian Standards (IS) for quality and safety compliance. Twenty-23 BIS certification is required per the Door Fittings (Quality Control) Order. Important criteria cover IS 4992, IS 6343, IS 3564, IS 1341, IS 205, IS 6315, and more. Application submission, factory inspection, product testing, and compliance verification comprise the procedure. Manufacturers have to follow quality standards and build internal testing labs. Approved is the ISI mark. For Indian door fitting sales, this accreditation improves regulatory compliance, market acceptance, and product dependability.