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The shadow line can easily be seen compared to other darker tapes on the market
**Please note that some low-voltage "Eco" exhaust fans do not allow any draught stopper to work because they do not produce enough air flow to open a flap (or flaps)
Designed for long-term exposure during construction with high UV durability but must not be left exposed for longer than 4 months
Please Note: This product is not suitable for fitting over exhaust fans with heat lamps
It is not recommended for external use and should not be left exposed to UV for longer than 4 weeks
ProctorVent Drainage Batten Size:VB20 20mm 1800mm Batten - Black The shadow line can easilyProctorPassive Drainage Batten Black VB10 & VB20 are Polypropylene Ventilated Battens designed to create a 10. 5mm or 20mm cavity for ventilation and drainage in the wall cavity, reducing the risk of moisture build up and condensation. The following recommendation is based on NCC 2022. FROM NATIONAL CONSTRUCTION CODE 2022 VOL. 1 F8D5 ABCB HOUSING PROVISIONS 10. 8. 3 Roof Type Requirement for Airflow Low Level (Eaves Fascia) High Level (Ridge)
