LEGO part 30046 - Black Window 1 x 2 x 2 2/3 Pane Lattice Diamond with Rounded Top at BrickScout
LEGO® 30381 4658970 - 6151351 - ToyPro
Amazon.com: Eske Kouri Gobricks GDS-989 Pane for Window 1 x 2 x 2 2/3 Compatible with Lego 30046 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (38 Dark Orange(083),1000PCS) : Toys & Games
Black 1x2x2 2/3 Rounded Window #30044 #30046 —10 Sets — Compatible with Lego | eBay