See caption
Box pews in Chowbent ChapelActive Unitarian place of worship in Atherton, Greater Manchester that was built in 1721.
Wikimedia Commons

Box pews are a type of church seating for the laiety in the naveCentral part of a church, used by the laiety., aisle or gallery of a church or chapel, enclosed by high panelled sides with a hinged door. They were installed in churches and chapels in England and other Protestant countries from the 16th to the early 19th century.[1][2]

From the late 18th century pew-rent was paid for the exclusive use of a particular box pew, providing a source of income for churches and chapels.[3]