SnapNrack Critter Guard, Array Edge Screen Kit, CLIPS ONLY, 4 inch, Sold Individually The new Array Edge Screen (Critter Guard) is designed to keep birds and other pesky critters from making their home under the array. The clips attach to the bottom flange of the module frame and have hooks to snap the screen into place. The clips are painted steel and can be “snapped” to the appropriate length to accommodate height variations. The mesh screen is vinyl-coated steel, rigid enough to keep out even the most industrious squirrel. The box frame adaptor allows for mounting on module frames that lack a flange to mount to (1 per clip).