VENT 3 PRO Heavyweight performance breathable Roof underlay 1m x 50m Wellington Boots the SEC valve ensures that

the SEC valve ensures that the AdBlue® is not contaminated by the surrounding environment of the IBC tank

Manufactured to DIN ISO 9655 Specifications

with a high efficiency brushless motor

Full length bevel edged blades manufactured from carbon steel hardened

VENT 3 PRO Heavyweight performance breathable Roof underlay 1m x 50m Wellington Boots the SEC valve ensures thatBBA certified Cold & Warm roof application 3 layer spun bonded membrane Clean and easy to use High performance & flexibility Excellent tensile strength No gusting wind noise UV stable for up to 3 months Excellent nail tear resistance BS5534: 2018 Wind Uplift Each individual Vent3 underlay product has the batten gauge & zonal application for wind uplift printed on this packaging. The manufacturers declared values are available from the Cromar website.