Heavy glass requires a heavy-duty closer. The Rockwood 304 Series Heavy-Duty Overhead Concealed Closer maintains strong and lasting movement using the same cast iron body as the 609 with a stronger spring.

The Rockwood 304 Series Heavy-Duty Overhead Concealed Closer has the following features:

• Heavy-duty cast iron closer
• Optional hold open assembly built into closer
• Separate closing and latching valves
• 5 mm extended spindle
• All weather fluid
• Non-handed
• Spring size 4
• Double acting
• Center hung
• End load arms

Key Dimensions:

Maximum Door Weight: Interior: 300 lbs. Exterior: 250 lbs.
Maximum Door Width: Interior: 48″ Exterior: 42″
Approvals and Listings: – Meets ANSI/BHMA Standard A156.4 Grade 3 – UL228

Specifications:

MATERIAL:

Cast Iron Closer Body
Radial Ball Bearing Bottom Pivot

SYSTEM INCLUDES:

5mm Extended Spindle
Spring Size 4

HOLD OPEN OPTIONS:

• 90° Back Stop, Non-Hold Open (OHC-304-90NHO)
• 90° Back Stop, Hold Open (OHC-304-90HO)
• 105° Back Stop, Non-Hold Open (OHC-304-105NHO)
• 105° Back Stop, Hold Open (OHC-304-105HO)

*Use an auxiliary stop with OHC-304.

ACCESSORY OPTIONS:

• Door Rail End Load Bottom Pivot (PV-FM-300END)
• Patch Fitting Floor Mounted Pivot (PF-FM-PIVOT)
• Patch Fitting Adjustable Pivot (PF-ADJ-PIVOT)
• Rixson 370 Floor Pivot (PV-370)
• Mounting Clips (OHC-609-MC)
• Center Hung End Load Closer Arm (OHC-609-ARM)

MORE INFO

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