Sellersville Cemetery a.k.a. St. Michael's Cemetery - Sellersville, Pennsylvania
25 E. Church Street
P.O. Box 92
Sellersville, PA 18960
This non-profit cemetery was organized in 1869 for the benefit of church members at St. Michael's Evangelical Lutheran Church and St. Paul's United Church of Christ in Sellersville, Pennsylvania. Members of other churches are accepted for burial, according to their website.
Graves are required to have a flat marker or some kind of monument within 18 months of burial.
Maximum length for a monument base is 36 inches on a single lot, 60 inches for a double lot, 72 inches for a triple lot. (That's big.) No height restrictions with monuments here.
Foundations for monuments and flat markers are not allowed to be installed until 6 months after burial. (?) Though if the memorial is going to be placed at the head of the grave, on top of undisturbed ground, I don't see why a foundation installation should be delayed.