In Lindgren's case, it's an emergency recall as Carey Price missed Wednesday's practice on the South Shore to undergo treatment after being hit in the mask by a shot during Tuesday night's game in Philadelphia.
Lindgren has already played eight games with the Canadiens so far this season, posting a 3-4-1 record, along with a 2.43 goals-against average, a .924 save percentage and one shutout.
For his part, Juulsen has played 31 games with the Habs' AHL affiliate this year, his first in the pro ranks.
The Abbotsford, BC native has scored one goal and collected six points, while posting a minus-9 differential. He missed the start of the season with a foot injury.
Juulsen, the Canadiens' first-round pick, 26th overall, from 2015, has yet to suit up for an NHL game.
Earlier in the day, the Canadiens traded defenseman Jakub Jerabek to the Washington Capitals for a fifth-round pick in 2019.
