How to add iframe in HTML textarea

[hotandcoldoutlet]

Hello

How can we add iframe inside the HTML textarea foreach product so that my eBay page fetch content from other webstie example :

<iframe id="desc_ifr" sandbox="allow-scripts allow-popups allow-popups-to-escape-sandbox allow-same-origin" class="" height="1564" width="1324" marginheight="0" marginwidth="0" frameborder="0" src="http://hotandcoldoutlet.com.au/laundry/laundry-tub-600x500mm-stainless-steel-cabinet/" title="Seller's description of item"></iframe>

<iframe id="desc_ifr" sandbox="allow-scripts allow-popups allow-popups-to-escape-sandbox allow-same-origin" class="" height="1564" width="1324" marginheight="0" marginwidth="0" frameborder="0" src="http://hotandcoldoutlet.com.au/laundry/laundry-tub-600x500mm-stainless-steel-cabinet/" title="Seller's description of item"></iframe>

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