Soundproof Your Home Office or YouTube Studio with Door D-Seals

Does it work? - Yes
Average noise reduction: -5 dB
Cost per door: RM 5

Get it on Shopee: https://invol.co/cl2iuzf
Get it on Lazada: https://invol.co/cl2iuzy

English blog post: https://helmihasan.com/d-shape-door-s...
Malay blog post: https://helmihasan.com/my/d-seal-pintu/