Warwick Mortise Lock Entrance Set - Double Knob with Single Escutcheon - Iron - Matte Black Finish - Multiple Options Available - Sold as Set Door Thickness:2-1/8" (+$50) Do I need to pre-drill

Do I need to pre-drill before installation

They measure 1

no welded joints)

Installation Tips: Predrill with 7/64" drill bit for hardwood applications and 3/32" for soft wood applications

and towel ring holder in an oil rubbed bronze finish

Warwick Mortise Lock Entrance Set - Double Knob with Single Escutcheon - Iron - Matte Black Finish - Multiple Options Available - Sold as Set Door Thickness:2-1/8" (+$50) Do I need to pre-drillThis Warwick Mortise Lock Entrance Set delivers a high quality of manufacturing. The set is designed to be strong, durable, and long lasting, and easy to assemble and use. The knobs are light, with a comfortable grip that will make opening and closing doors effortless. Product Specifications: Mortise Lock Entrance Set Not for use on pre drilled doors Double knob with single escutcheon Warwick style Material: Iron Finish: Matte Black Schlage C Keyway: