50 Variable Depth LP Record Mailer Boxes and 100 - 12.25" X 12.25" Corrugated Filler Pads 50 - 12.5" x 12.5" x .5" or 1" variable depth mailer boxes Variable depth: scored at .5" and 1" to make your required height Securely holds 1-4 albums or other items 100 - 12.25" x 12.25" filler pads to protect your shipment! Mailers and pads manufactured with 32ECT corrugation (roughly equivalent to 200# test)