Duplo Baseplate Raised 18 x 19 x 6, with Large Top Hole, and No Studs

Reference

72538

Duplo Baseplate Raised 18 x 19 x 6, with Large Top Hole, and No Studs (part 72538) is a LEGO element. CollectORbuild's catalog records it in 2 sets, including Little Forest Friends and The Meadowsweet's' Home.