Learn the standard thickness of wooden fire doors in India. THE INGRESS manufactures 50–55 mm fire-rated wooden doors for 60–120 minute protection.
The simple answer is that there is no single universal thickness for every wooden fire door. The required shutter thickness depends on the tested door construction, fire rating, core material, dimensions, hardware, and complete certified door assembly. In the Indian market, 50 mm to 55 mm is a commonly used shutter thickness for 60- and 120-minute wooden fire doors. THE INGRESS specifies a 50–55 mm shutter thickness for its 60–120 minute wooden fire-door range.
Standard Wooden Fire Door Thickness in India
For many commercial projects, wooden fire-rated door shutters are manufactured around 50 mm or 55 mm thick. However, thickness alone does not determine whether a door will provide the required fire resistance.
For example, other tested Indian wooden fire-door systems also specify 50–55 mm shutters for 60- and 120-minute applications, while some designs use different thicknesses.
Therefore, architects and contractors should select a door based on its tested and certified complete assembly, rather than simply specifying a thicker wooden shutter.
Does Fire Rating Affect Wooden Fire Door Thickness?
Yes. The required construction may vary depending on whether the project requires an FD30, FD60, FD90, or FD120 fire rating. BIS documentation for IS 3614 recognizes wooden-composite hinged fire doors across these ratings and treats minimum door-leaf thickness as part of the tested product specification. BIS
A higher fire rating may require changes to the door core, insulation, frame, seals, glazing, hardware, and sometimes shutter thickness. This is why a normal wooden door cannot simply be made thicker and considered a certified fire door.
60-Minute Wooden Fire Door Thickness
For a 60-minute wooden fire door, approximately 50–55 mm is a common shutter-thickness range in Indian manufacturer specifications. The actual specification should match the tested construction and project fire-safety requirements.
THE INGRESS offers wooden fire doors with construction that includes a hardwood internal frame, insulation/calcium-silicate-board components, commercial ply, intumescent fire/smoke seals, and optional fire-rated glazing.
120-Minute Wooden Fire Door Thickness
A 120-minute wooden fire door commonly uses a heavier tested construction. THE INGRESS lists 50–55 mm shutter thickness for its 60–120 minute wooden fire doors, with fire-rated glass options and intumescent fire/smoke seals as part of relevant configurations.
Other manufacturers may use 55 mm, 65 mm, or even thicker constructions for particular 120-minute designs, demonstrating why thickness should never be considered independently of the tested door assembly.
What Makes a Wooden Fire Door Fire Resistant?
A fire-rated wooden door is a complete engineered system. Its performance can depend on the shutter construction, fire-resistant core and insulation, hardwood frame, intumescent seals, fire-rated glazing where applicable, hinges, door closer, locks, panic hardware, and installation.
BIS guidance for IS 3614:2021 also emphasizes that fire doors are evaluated as systems and identifies ratings such as FD30, FD60, FD90, and FD120
Choose THE INGRESS for Wooden Fire Doors in India
If you are looking for a reliable Wooden Fire Door Manufacturer in India, THE INGRESS provides fire-resistant wooden door solutions for different commercial and institutional requirements.
For a project-specific specification, consult the approved fire-safety design and select the tested door assembly that matches the required fire rating, size, construction, hardware, and installation conditions.
Keywords
