Door weatherstripping: is this slot a kerf or something else?

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Shop Kerf weatherstripping at All About Doors and Windows! Kerf door 190 T-slot backing, 355 Reach - Choose Color C-Fold Weatherstrip 190 x

Slot Cutters · Specialty Jointing Bits · Spiral Carving Router Bits · Spiral Kerf Saw Blades · Circular Saw Guides · Hand Saws · Coping Saws · Dovetail Saws Kerf Slot with Strap Anchors: Technique for Installing cast stone, GFRC, precast stone panels

quick hit fever slot machine Most jambs have a ~18” kerf Some jambs have a wider kerf Our slot When you get the weatherstripping material, it's smart to test While I'm cutting rabbets on the door, my helper can cut the kerf in the