< src="http://whitesplumbingandheating.co.uk/wp-content/uploads/2015/06/DRayton_trv4-300x200.jpg" class="attachment-medium size-medium" alt="Drayton Radiator TRV" srcset="http://whitesplumbingandheating.co.uk/wp-content/uploads/2015/06/DRayton_trv4-300x200.jpg 300w, http://whitesplumbingandheating.co.uk/wp-content/uploads/2015/06/DRayton_trv4-237x157.jpg 237w, http://whitesplumbingandheating.co.uk/wp-content/uploads/2015/06/DRayton_trv4-267x178.jpg 267w, http://whitesplumbingandheating.co.uk/wp-content/uploads/2015/06/DRayton_trv4-521x347.jpg 521w, http://whitesplumbingandheating.co.uk/wp-content/uploads/2015/06/DRayton_trv4.jpg 750w" sizes="(max-width: 300px) 100vw, 300px" />