ventilating equipment: roof bases

Roof bases type A or B made of PVC are designed for fixing roof fans and other end elements of gravity ventilation on the roof or ventilation chimney. Type A roof bases are used in ventilation systems as load-bearing elements of intake and roof apertures with a rectangular cross-section.

Types of type A bases:

Type A I – base without a  duct straight connection and adjustment,

Type A II – base with duct straight connection without adjustment,

Type A III – base with duct straight connection and air flow regulation.

Types of B-type attitudes:

Type B I – base without duct straight connection and adjustment,

Type B II – base with duct straight connection without adjustment,

Type B III – base with duct straight connection and air flow regulation.

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