Does this replace No 496186? Is it compatible with CT 36 E?

No, this is made for Festool's newest dust extractor, the CT SYS.496186 is still the correct bags for the CT 36. Here's a link to it.http://www.toolnut.com/festool-496186-selfclean-filter-bag-for-ct-36-quantity-5.htmlThere is also a long life filter bag available for the CT 36 (496121), below.http://www.toolnut.com/festool/festool-dust-extractors/festool-filter-bags/festool-496121-longlife-filter-bag-longlife-for-ct-36.html