Steel Security Doors are designed to resist attacks to gain entry to premises. Below are the gradings based upon the LPCB Standards.
Grade 1 - Resist a 15 minute attack by two people using tools that include wrenches, 300mm lever and a screwdriver.
Grade 2 - Resist a 20 minute attack by two people using tools that include hand drill, claw hammer and a screwdriver.
Grade 3 - Resist a 30 minute attack by two people using tools that include sledge hammer, cordless power drill and a scissor jack.
Grade 4 - Resist a 15 minute attack by two people using tools that include Disc Cutter, Circular Saw and Corded Power Drill.