Knock Down (KD) vs Welded Door Frames | Steel Door Institute
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- เผยแพร่เมื่อ 5 ก.ย. 2024
- The two common types of door frames are knock down (KD) and welded. This video covers the most popular types of KD and welded frame constructions, along with the pros and cons of each.
For more details, check out this article:
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