The 220-Series are extra heavy-duty deadbolt locks. A rugged fixed shroud surrounds the latchbolt and a free-spinning solid metal collar encases the cylinder, resisting most physical attacks. Available with SC4 or WR5 keyways, or prepped for Small Format Interchangeable Core (SFIC). These locks are recommended for use on exterior and interior doors. Typical applications include Offices, Commercial Properties, Residences, Multi-Family Buildings, Industrial Sites, and Public Buildings.