Vinyl Record Mailers (50) White Holds 1-4 - 12" Record LP Cardboard Multi-Depth Mailers by ValueMailers These are LP Record Mailers (Shipping Boxes). These mailers hold from 1-4 LPs, making them ideal for shipping to your customers. Genuine ValueMailers TradeMarked Product The mailers measure 12.5"x 12.5" x 1" deep. They have "PERFS" at 1/2" which make the box easy to fold up and