Plenafill® Blanking Panel 27-U ($4.30 per U) – Data Center and Cleanroom Products and Solutions - SET3
StarTech.com 1U Rack Blanking Panel for 19in Server Racks and Cabinets - BLANKB1 - Rack Accessories - CDW.com
Rack Blanking Panels For Aisle Containment - Data Center Store
1U Blank Panel, 5 Pcs 1U Server Rack Panels, Metal Rack Mount Filler Panels for 19inch Serve Rack Cabinets/Enclosures/Network Cabinets, Black - Walmart.com
Plenafill Blanking Panels - Pack of 10 – Sealco
1U Blank Panel - Metal Spacer 19" Filler for Server Rack Cabinet Enclosure - TP1709 — Tupavco