Sold under many names

Meeting rail

The horizontal bar where the two sashes of a double- or single-hung window meet and lock in the middle.

What it means for you

It's where hung windows leak air and where the lock lives, so a fully interlocking or reinforced meeting rail is a genuine air-seal and security feature, not just trim.

Where you'll see it

The lock line across the middle of a hung window; called out on better spec sheets.

Also sold as: check rail

Related terms

Defined by Marc Hanley

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