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 warranty Key FeaturesModelERS-ASCH-3050Size30*50CMModelERS-ASCH-4080Size40*80CM MODELSIZESpecificationsInstallation InstructionERS-ASCH-305030*50cmERS-ASCH-408040*80cm Related Down Light CCT LED Emergency indoor batten light-AU Shower Hand Three Fuction Tri-proof Batten Light Bulb Light