Though Berlin-based Danish artist Jeppe Hein has installed his trademark polished stainless steel panels in large outdoor spaces (notably at Brooklyn Bridge Park in 2015), 303 Gallery’s tiny back space seems uniquely suited to host an intense experience of reality for visitors who see themselves and Hein’s striped paintings cut together in thin strips. Hein has explained that his stripe paintings represent breathing in and out which sounds meditative, but in this installation is geared to quicken the senses. (On view in Chelsea through Oct 19th).