How to cover this mail slot up so cold air won't come in?

mail slotsdoor letter slotatv bow holderoffice mail slotseagle slotslot wall uprightslot walldoor mail slotpost box slotslot sale Categories AlibabaHome

Wall Mount Faucets · Widespread Faucets · Culinary Mail Slots · View Details Rocky Mountain Hardware Home Accessory Mail Slot Cover Rocky Mountain Hardware

wallet slot free 365 cover The thin wood wouldn't stop even a nine

wallet slot pg Buy Stainless Steel Door Mail Slot with Extra Large Mail Catcher Combination Lock 11'' x '' Mail Slot Cover and Slot Catcher at Aliexpress for