تعريف valley gutter في الإنجليزية الإنجليزية القاموس.
A channel used to carry off water from the "V" of roofs of multi-gabled buildings
A channel used to carry off water from the "V" of roofs of multi-gabled buildings Vapor Barrier Material used to retard the flow of vapor or moisture into walls and thus prevent condensation within them Ventilation The process of supplying outside fresh air to, or removing air from an enclosure Ventilator An accessory usually used on the roof that allows air to pass through