Manhole covers with lifters

Additional equipment of the hatch with cylinders facilitates opening and protects against uncontrolled closing.

- austenitic stainless steel with the markings AISI3014, EN 1.4301 and AISI316L, EN 1.4404
- damper sizes with cylinders from K3x3 to K10x10 are available as standard
- ATT carries out orders for manholes designed according to individual customer guidelines
- access to underfloor installations available
- isolation against odors
- watertightness
- simple opening system
- high durability
- aesthetics
- 2x handle included
- elevators: painted, galvanized, stainless steel
- option: checker plate
Standards / Certifications
ATT_certificates external drainage

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Public facilities
Outdoor public space
Industrial production