Some models feature a hinged hood to ease access to motor and drives for maintenance.
Hh robertson roof ventilators.
Available in standard or special colours.
May also be used for single skin roof and wall cladding.
Insulated cladding and roofing systems and ventilators.
Since 1918 hh robertson has designed built and installed gravity ventilation systems for thousands of industrial structures.
Robertson ventilation industries rvi founded in 2005 is a legacy holding company which has a lineage dating back to 1918.
The head office is located in gauteng south africa with branches in the western cape kwa zulu natal and mozambique.
Hh robertson offer a wide choice of integrated architectural panels cladding and screens to suit any commercial or multi residential project.
Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed 1961 07 03 filing date 1961 07 03 publication date 1962 12 04 1961 07 03 application filed by hh robertson co filed critical hh robertson co.
This invention relates to ventilators of the stationary type in which upright suction creating members are located on opposite sides of a cap member for the gas inlet for the ventilator and formwith said cap member gas.
Global roofing solutions pty ltd consists of two leading south african roofing material manufacturing operations grs brownbuilt established in 1964 and grs hh robertson established in 1958 making it one of the largest metal roofing manufacturers in south africa.
Our areas of operation include the mining industrial commercial retail and residential sectors worldwide.
Filtered supply ventilators help supply filtered make up air in commercial or institutional buildings.
Robertson company pittsburgh pa a corporation of pennsylvania application december 12 1034 serial no.
1964 and hh robertson established in 195 8 making it one of the largest metal roofing and roofing accessory manufacturers in south africa.
Hh robertson co priority date the priority date is an assumption and is not a legal conclusion.
Robertson natural gravity ventilation systems are designed to produce and maintain predictable conditions in commercial general warehousing and industrial buildings.
May be specified for robertson roof and wall cladding gravity ventilation and sandwich panel architectural systems.
Roof ventilators are designed to help exhaust contaminated air from kitchen range hoods up and away from the roof.
