International Organization for Standardization
ISO 16739-1:2024(E)
LOOSECOVER
Loose Cover
MANHOLE
Manhole
NONE
No waterproof.
SECUREDCOVER
Secured Cover
SECUREDCOVERWITHMANHOLE
Secured Cover with Manhole
OTHER
required category not on scale
NOTKNOWN
Value is unkown
UNSET
Value has not been specified