A piece of glass proved to be a real pane in Anaheim.

Midway through the second period, a shot from Colorado Avalanche defenseman Eric Gelinas caused the glass behind the Ducks' net to crack.

After a 45-minute delay during which the two teams were sent off to their respective locker rooms for an early intermission, the players returned to the ice to play what essentially became an extended final frame.

Why did it take so long?

A fresh piece of glass was initially brought out as a replacement, but had to be cut so it would accommodate the camera behind the net, per Curtis Zupke of the Los Angeles Times.

That forced the crew to make some adjustments behind the scenes.

After some measure of carving, a new piece of glass was installed and the crew made its way off the ice, presumably to figure out why there wasn't one ready to go in the first place.

Here's a look at how the whole scene played out.

The Ducks scored two goals following the dry scrape and emerged with a 2-1 win over the lowly Avs.

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