< src="http://whitesplumbingandheating.co.uk/wp-content/uploads/2012/09/RenewableFeature2-300x136.jpg" class="attachment-medium size-medium" alt="" srcset="http://whitesplumbingandheating.co.uk/wp-content/uploads/2012/09/RenewableFeature2-300x136.jpg 300w, http://whitesplumbingandheating.co.uk/wp-content/uploads/2012/09/RenewableFeature2-267x121.jpg 267w, http://whitesplumbingandheating.co.uk/wp-content/uploads/2012/09/RenewableFeature2-521x236.jpg 521w, http://whitesplumbingandheating.co.uk/wp-content/uploads/2012/09/RenewableFeature2.jpg 750w" sizes="(max-width: 300px) 100vw, 300px" />