Material and durability: Stainless steel construction provides rust resistance and deformation resistance, delivering long service life with strong loadbearing capacity for roof access. Insideonly lockable operation: A 90degree rotating lockable handle allows opening and closing the roof access cover from inside, creating a secure entry point to the roof and helping protect your property from unauthorized access. Weatherproof sealing: An integrated sealing strip embedded in the cover frame blocks rainwater from seeping through gaps and also improves sound insulation and thermal insulation. Smooth and quiet hydraulic action: The pneumatic hydraulic rod enables easy, quiet opening and closing of the hatch, and holds it open at 90 degrees for safe, hands access; operation is shockabsorbing and silent. Use scenario: Residential attic maintenance and roof inspections—open the hatch from inside for safe access to gutters, vents, and roofing components without compromising weather protection. Use scenario: Commercial or industrial roof servicing—secure, weathertight access for HVAC units, solar panels, and other rooftop equipment, with secure entry and quiet operation. Use scenario: Seasonal storage or equipment installation on the roof—reliable, durable access that remains secure when not in use and provides a controlled, easy entry point for technicians.