Magic mesh...screen you Velcro on...centre split with magnets, walk through and closes and fastens...
Available everywhere I think...one of those as seen on TV ad's
But here is a (Canadian) link so you can visual.
Magic Mesh Hands-free Magnetic Screen Door | Canadian Tire
He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion. - Unknown