> Fixed height/rigid
Type H-4055 Air valve; fixed height; admittance/discharge of air.
Type M-4055 Air valve; fixed height; admittance/discharge of air.
Type PURBRA; fixed height; rectangular top.
Type PERA; fixed height.
Type PURDIE; fixed height.
Type NORMPOT BRANDKRAAN; fixed height; Belgian design.
Type Normpot Afsluiter; fixed height; Belgian design.
Type Normpot Afsluiter kort; fixed height; Belgian design.
Type Surface box MP; fixed height.
Type Surface box CPH; fixed height.
> Height adjustable/telescopic
Type H-4055V Air valve; fixed height; admittance/discharge of air.
Type Surface box MPV; height adjustable; round top.
Type Surface box MPV; height adjustable; hexagonal top.
Type Surface box MPV; height adjustable; square top.