USP IS24 24" Insulation Supports (100 Pack) Used to hold insulation in place between floor or roof framing USP IS24 24" Insulation Supports (100 Pack) Features: Easily installed, just push in place Chisel pointed ends assure snug fit Insulation supports are spaced every 12 to 16 inches 13 gauge springy steel For 16" on center spacing Size: 24"