Lego X-large 15"x15" Gray Building Base Plate 48x48 dots | eBay
GREEN BASEPLATE LEGO - THE TOY STORE
Amazon.com: LEGO Classic Green Baseplate 2304 Supplement for Building, Playing, and Displaying Creations, 10in x 10in, Large Building Base Accessory for Kids and Adults (1 Piece) : Toys & Games
LEGO Gray Baseplate (10701) – The Red Balloon Toy Store
Classic Baseplate Green LEGO - Mudpuddles Toys and Books
Official LEGO Base Plate Large 15”x15” Gray 48x48 studs | eBay
Slab Dream Lab
Found awesome instructions on building a large version of the classic moon crater baseplate : r/lego
piece information - What is the biggest base plate available? - Bricks
Amazon.com: LEGO Education Large Building Plates Accessory Set for Girls and Boys (4 Pieces) : Toys & Games