Share Buttons Chimney damper Block chimney airflow Energy & cost saving Extremely tough yet flexible material Reusable design Available in a range of shapes& sizes Easy installation 3 warrantyKey FeaturesModelERS-ASCH-3050Size30*50CMModelERS-ASCH-4080Size40*80CM MODELSIZESpecificationsInstallation InstructionERS-ASCH-305030*50cmERS-ASCH-408040*80cmRelated Sensor Panel Light Tri-proof Emergency Batten Light LED Tri-proof Batten Light with sensor Linear Highbay Light LED Emergency Tri-proof batten light with sensor-BR