the outer side of the wall of the house with ventilation holes for the air recuperator. daytime outdoors from low angle view

system tube air modern wall building condition efficiency fan recovery renewable round saving supply blowing divider recuperate ecology energy window exhaust assembly elevation grille extraction home installation pipe technology ventilation absorber yellow roof blower intake outlet distributive exchanger heat mechanical recuperation separator steel mesh paving slab soffit red outer side house holes for recuperator daytime outdoors from low angle view recuperator view