Corbin Russwin Inside Grade 1 Spring Housing for CL3300 Series

Corbin Russwin 783F308 Inside Spring Housing for CL3300 Series, 1-3/4" to 2" Door Thickness

Genuine Replacement Spring Housing Component for CL3300 Series Door Hardware

The Corbin Russwin 783F308 Inside Spring Housing is a precision-engineered replacement component designed specifically for compatibility with the Corbin Russwin CL3300 Series door hardware. This inside spring housing accommodates door thicknesses from 1-3/4" to 2", making it a reliable solution for maintaining the proper function of CL3300 Series installations in commercial environments. Sourced directly from Corbin Russwin, this part ensures a proper fit and consistent performance when servicing or restoring existing hardware.

Professional Features & Benefits

• Grade 1 cylindrical lockset per ANSI/BHMA A156.2 Series 4000, Grade 1
• Lever Release™ design for vandal resistance — outside lever rotates freely when locked
• EZ-Install components significantly reduce installation time
• Independent return springs prevent lever sag
• 4 solid cast lever options (Armstrong, Newport, Princeton, Frascati)
• Anti-rotational through-bolts at 6 and 12 o'clock positions
• Accommodates 6 or 7-pin conventional cylinders and all keying levels
• CL3352 Classroom Intruder function: double-cylinder lockset, always-free egress
• Available with MicroShield® antimicrobial coating (suffix option code "C")
• CL33900 electrified option: fail safe and fail secure, 12 or 24VAC/VDC
• ElectroLynx® 8-pin connector on all electrified products
• Seven-year limited warranty (two-year for electrified)

Technical Specifications

• Grade: ANSI/BHMA A156.2 Series 4000, Grade 1
• Handing: Non-handed (except FZD trim)
• Door Thickness: 1-3/4" (44mm) 2" (51mm) standard; optional over 2" 2-1/4" (57mm)
• Backset: 2-3/4" (70mm) standard; optional 3-3/4" (95mm) and 5" (127mm)
• Latchbolt: Stainless steel, 1/2" (13mm) throw; optional 3/4" (19mm) fire latch
• Auxiliary Latchbolt: Deadlocking — prevents manipulation when door is closed
• Lock Chassis: Steel, zinc dichromated for corrosion resistance
• Front: Wrought brass, bronze, or stainless steel, 2-1/4" x 1-1/8"
• Strike: Wrought brass or stainless steel ANSI curved lip, 4-7/8" x 1-1/4" x 1-1/4" lip to center
• Cylinder: Brass, 6-pin L4 keyway, 0-bitted standard
• Electrified Voltage: 12VAC/DC or 24VAC/DC (CL33900 Series)
• Electrified Current: 250mA @ 12VAC/VDC; 150mA @ 24VAC/VDC, continuous duty solenoid
• Certifications: ANSI/BHMA A156.2 Grade 1; UL-cUL listed; ANSI A117.1 Accessibility; California State Fire Marshal
• Warranty: Seven-year limited (two-year for CL33900 electrified)

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Government and Municipal Buildings

Why Choose Corbin Russwin Quality?

Corbin Russwin door hardware components are manufactured to exacting commercial-grade standards, ensuring reliable performance and precise fit within the CL3300 Series hardware family. This genuine inside spring housing replacement supports the long-term serviceability of Corbin Russwin installations, minimizing downtime and maintaining the integrity of the original hardware assembly. Engineered for demanding commercial applications where dependable performance and proper component fit are essential.