Are these the card guides used on some homebrews? The price looks good (unless you have better deals?) Vector Electronics BR27D Connector Mounted Card Guides https://skycraftsurplus.com/connector-mounted-card-guides-sk3683.html $4.25 (Mouser price: $14.20) (Digikey price $15.38) 4.5" Wide Plugbords with Centered Contacts Vector Plugbord Series 3677, 3682 and 3662 Rugged support of 0.062" thick Free standing circuit boards For application in which space is premium Aluminium alloy construction Mounting hardware included { HD55 Hardware Kit } Happy hunting! Jeff Jonas