Limit EXCERPT length in post grid (not content length)

[Christina]

Has anyone found a way to limit the actual excerpt length in the post and page grid block? I have the code built into my theme to limit it to 20:

	add_filter( 'excerpt_length', 'sp_excerpt_length' );
	function sp_excerpt_length( $length ) {
		return 20;
	}

And in the post and page grid options, I limit it to the same. But still, only content will cut off at 20, but for posts that have excerpts it continue to show the *entire* excerpt.

[Author]

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