Mention any design of frame of qaudcopter
Hi @Anuabhi and welcome to the forum!
You can find a lot of quadcopters here: https://www.robotshop.com/en/quadcopters.html
Do you want a complete product or do you want to make it on your own? Are you asking for a design of frame like a 3D model?
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Hello @Anuabhi and welcome to the community 
If you are just looking for the frame you can check out the UAV & Drone Frames / Mechanics section. And if you are looking to create your own maybe the information of the following guide can help you out