single action spring hinges
3 3 0 0    s e r i e s

Features C-UL Listed for Fire Doors Conforms to ANSI Specifications Easily Adjusted Spring Tension

5/8" Radius Spring Hinge Individually Boxed 25-3312DBB Sizes Finish Model No. 3 1/2" x 3 1/2" Dull Brass 4" x 4" Dull Brass 25-3312DBC 3 1/2" x 3 1/2" Satin Chrome 25-3312DCB 4" x 4" Satin Chrome 25-3312DCC

1/4" Radius Spring Hinge Individually Boxed Sizes Finish Model No. 3 1/2" x 3 1/2" Dull Brass 25-3311DBB 4" x 4" Dull Brass 25-3311DBC 4" x 4" Prime Coated 25-3311PCC 3 1/2" x 3 1/2" Satin Chrome 25-3311DCB 4" x 4" Satin Chrome 25-3311DCC

Square Corner Spring Hinge Individually Boxed Sizes Finish Model No. 3 1/2" x 3 1/2" Dull Brass 25-3310DBB 4" x 4" Dull Brass 25-3310DBC 4 1/2" x 4" Dull Brass 25-3310DBD 3 1/2" x 3 1/2" Satin Chrome 25-3310DCB 4" x 4" Satin Chrome 25-3310DCC 4 1/2" x 4" Satin Chrome 25-3310DCD 4 1/2" x 4" Brass 25-3310PBD 4 1/2" x 4" Antique Nickel 25-3310AND 4 1/2" x 4" Nickel 25-3310ND

STANDARD PACKAGING Item No. Corners Hole Pattern Standard Packaging 3310 - 3.5 X 3.5 Full Mortise Square Template 1 Each Per Box With Screws (Full Wood / Half Machine) 3311 - 3.5 X 3.5 Full Mortise 1/4" Radius Template 1 Each Per Box With Screws (Full Wood / Half Machine) 3312 - 3.5 X 3.5 Full Mortise 5/8" Radius Template 1 Each Per Box With Screws (Full Wood / Half Machine) 3310 - 4 X 4 Full Mortise Square Template 1 Each Per Box With Screws (Full Wood / Half Machine) 3311 - 4 X 4 Full Mortise 1/4" Radius Template 1 Each Per Box With Screws (Full Wood / Half Machine) 3312 - 4 X 4 Full Mortise 5/8" Radius Template 1 Each Per Box With Screws (Full Wood / Half Machine) 3310 - 4.5 X 4 Full Mortise Square Template 1 Each Per Box With Screws (Full Wood / Half Machine)

Maximum Door Size Labelled Doors: Maximum door size and number of hinges required is based on limits set by NFPA - Standard #80 (2 spring hinges minimum). These hinges are listed by U.L. and C.U.L. for fire-rated openings up to and including 3-hour, A-label openings. Maximum door size is 3' x 7' x 1-3/4" Non-Labelled Doors: Maximum door width: 4'. For doors over 7'-6" in height, use an additional hinge for each additional 30" of height or fraction thereof.

*NOTE: Wind conditions, excessive air pressure on one side of opening, or other adverse job conditions may require the use of all spring hinges. For maximum versatility, use all spring hinges. U.L. and C.U.L. listed spring hinges are not available with reverse spring.

Hinge Selection 3300 Series Recommended Maximum Door Weight (Lbs.) *Spring Hinges 3-1/2" Full Mortise 50 70 90 2 ea, 2 ea, 3 ea, 4" Full Mortise 60 85 110 2 ea. 2 ea. 3 ea. 4-1/2" Full Mortise 70 115 150 2 ea. 2 ea. 3 ea.

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