Corbin Russwin DC3210 Standard Duty Closer

The Corbin Russwin DC3210 is a Grade 1 standard-duty surface-mounted hydraulic door closer built for commercial, institutional, and retail openings. One closer body covers power sizes 1 through 6, so you can spec this single SKU across office doors, classroom doors, corridor doors, and exterior entry doors without stocking multiple sizes. Tri-packed with hardware for regular arm, top jamb, and parallel arm installations in the same box. Non-handed. ANSI/BHMA A156.4 Grade 1 certified, UL 10C fire-rated, ADA compliant at 5 lbf maximum.

What Is the Corbin Russwin DC3210

The DC3210 is the standard-duty flagship of the Corbin Russwin DC3000 Series surface-mounted closers. "DC" stands for door closer, "3000" is the series, and "3210" codes the standard-duty model with the Universal Quik-Install mounting bracket system. Buyers also search this as "Corbin Russwin DC3210" or just "DC3210 closer." The Quik-Install bracket mounts to the door or frame first, then the closer attaches to the bracket. That cuts installation time significantly compared to legacy closers that require holding the full assembly up while drilling. The bracket measures 1-3/4" x 6" with 1" x 4-5/16" hole spacing, which matches the standard commercial closer footprint used by most spec-writers.

Corbin Russwin DC3210 Specifications

• Power size: 1 through 6, field-adjustable with 15% arm bracket adjustment

• Mounting: Tri-packed (regular arm, top jamb, parallel arm) included in box

• Installation system: Universal Quik-Install mounting bracket, standard

• Handing: non-handed

• Valves: latching speed, closing speed, backcheck intensity (all standard)

• Optional delayed action valve: M71 (20-second preset, between 90° and 70°)

• Maximum opening: 180° for all three mountings (conditions permitting)

• Body: cast iron case with seamless cold-headed steel spring tube

• Arm: forged steel

• Spindle: cold-headed heat-treated steel

• Piston: 1-3/8" diameter, heat-treated steel

• Springs: chrome silicon wire

• Seals: O-rings

• Hydraulic fluid: high-lubricity extreme-temperature

• Cover: non-metallic full cover standard (slim cover optional, M76)

• Fasteners: self-drilling screws standard (SNB sex nuts/bolts optional, M54)

• Certifications: ANSI/BHMA A156.4 Grade 1, ANSI A117.1, UL/ULC/UL10C, ADA (5 lbf max)

• Warranty: 5-year limited

DC3210 Arm Options (Standard, A1, A2, A3, A4, A5, A10)

The DC3210 ships with your choice of seven arm configurations. Pick based on mounting type, fire rating, and whether the opening needs hold-open:

• Standard Arm with PA Bracket: regular duty, closes every time

• A1 Hold Open Arm with PA Bracket: standard duty with friction hold-open

• A2 Heavy-Duty Parallel Hold Open Arm: for high-traffic doors with hold-open

• A3 Heavy-Duty Parallel Arm: for abuse-prone openings, no hold-open

• A4 Heavy-Duty Reversible Backstop Parallel Arm: built-in backstop prevents over-swing

• A5 Heavy-Duty Reversible Backstop Parallel Hold Open Arm: backstop plus hold-open

• A10 Heavy-Duty Regular Arm: upgraded regular arm for heavy use

Important code note: hold-open arms (A1, A2, A5) are not permitted on fire-rated openings. For fire doors, specify the standard arm, A3, A4, or A10 only.

DC3210 Finishes and Optional Features

Five painted finishes ship on the DC3210: 689 Silver Aluminum (standard), 690 Dark Bronze, 691 Light Bronze, 696 Satin Brass, and 693 Black. All are factory-applied baked enamel over the cast iron body. Specify M71 at order time if you need the delayed-action valve (useful for ADA openings where occupants need extra time to pass through), M76 for the slim cover, or M54 for sex nuts and bolts instead of self-drilling screws. For deep reveals or non-standard soffits, add the 188F65 or 597F58 drop plate to adjust closer height.

Where to Buy the Corbin Russwin DC3210

We've stocked Corbin Russwin door closers since 2001, and the DC3210 ships the same day from the Standard Door Closers lineup.