Please provide me with the context or question related to "2 1 2 copper 90". This phrase is too ambiguous to create a blog post. I need to understand what you want to write about. For example, are you referring to:
- A specific type of copper pipe fitting? (e.g., a 2-inch by 1 1/2-inch copper 90-degree elbow)
- A plumbing or electrical configuration?
- Something else entirely?
Once I have more information, I can write a comprehensive and SEO-optimized blog post. Please provide more details!
