"cj" wrote in message
...
i have an enclosed sunroom attached to the side of my house. i can enter
the room through a standard size doorway but i would like to open the
entrance considerably, about 10 feet or so.i guess the way to go would be
to put in an i beam header to support the weight. what size i beam would i
use? the i beam would be part of an exterior load bearing wall.
thanks, cj

A microlam header or 2x header/steel plate sandwich is usually adequate for
short residential spans. Get some qualified help.