Easily added to popular Plano 42" All Weather 2 And Rustrictor Gun Cases; EPP Panels and Blocks quickly replace current internal setup; GRID system holds your gear securely and protects better than foam sheets; Not just for firearms; can be used for all types of gear; EPP construction is lighter and stronger than traditional foam; Endlessly customizable and no tools required; Unique gear loadouts set up in seconds; GRID is stronger than open cell foam, holds your gear in place, and protects better from impacts; Resists absorbing liquids and chemicals and easy to clean with a damp cloth; Good temperature stability; Ability to reconfigure the GRID means no cutting or plucking of foam that leaves you with one fixed configuration; GRID Block arrangement lets you maximize the use of all of your space