Remember normal interior doors and hollow doors will not need sufficient insulation and core construction and should warp and defiantly will not help insulate your cellar. https://objectstorage.ap-singapore-1.oraclecloud.com/p/OSF44pochlYLoBMSk3-HhAFQAfoX22MEQx9Z0CK5TPQPNsPyQPfWo3RrqpoJ7Pnz/n/axqjqojndoew/b/Ruou-tay/o/Ruoutetvanghethuatgiaotieptrongdipnammoi.docx.html