The S. Parker 955BC is an extra heavy duty door closer with backcheck, part of S. Parker's 950 series, built for the big openings that a standard closer can't handle. It's rated for interior doors up to 54 inches wide and exterior doors up to 48 inches wide, and it's UL tested and listed for use on hollow metal fire rated doors. That fire listing and the large-door capacity are what set this closer apart: where the lighter adjustable closers cover everyday doors, the 955BC is the one you reach for on a heavy, wide, or fire-rated opening. The exterior housing is high tensile strength aluminum, and S. Parker backs it with a 10-year guarantee.

What makes the 955BC extra heavy duty

This S. Parker door closer is purpose-built for size and abuse. The 54-inch interior and 48-inch exterior door ratings mean it can control large entrance doors, wide corridor doors, and heavy fire doors that would overwhelm a standard-duty closer. The high tensile strength aluminum housing stands up to the higher forces a big door generates, and because the 955BC is UL tested and listed for hollow metal fire rated doors, it's a code-compliant choice for fire-rated openings, where a non-listed closer isn't allowed. For a contractor or facility manager specifying hardware for a large or fire-rated door, that combination of capacity and listing is the whole reason to choose it.

Backcheck, speed control, and replacement fit

The features that matter day to day are here too. Backcheck acts like a shock absorber during the opening swing, slowing the door before it can fly open and slam the arm into a wall, which on a large or windy door is exactly the protection you want. Two separate speed controls let you adjust closing speed and latching speed independently and at any time, so you tune how the door travels and how firmly it latches. The rack and pinion mechanism runs in a fully enclosed aluminum housing with all-temperature hydraulics, so closing stays consistent through seasonal temperature swings.

For replacement work, the 955BC is non-handed and uses the same template as several national brands, including the Parker 500, the Yale 50, and the Norton 1600. If you're replacing one of those, the 955BC lines up with the existing prep, which turns a heavy-door closer swap into a straightforward job rather than a redrill.

S. Parker 955BC specifications

• Type: Extra heavy duty surface door closer, 950 series, rack and pinion, with backcheck.

• Door capacity: Interior doors up to 54 inches wide, exterior doors up to 48 inches wide.

• Fire rating: UL tested and listed for hollow metal fire rated doors.

• Backcheck: Standard, cushions the door during the opening cycle.

• Speed control: Separate, adjustable closing and latching speeds, adjustable at any time.

• Hydraulics: All-temperature hydraulic fluid in a fully enclosed aluminum housing.

• Housing: High tensile strength aluminum.

• Arm: Parallel arm bracket not included (order separately if needed). Hold-open arm available.

• Template: Non-handed. Same template as Parker 500, Yale 50, and Norton 1600.

• Finishes: Aluminum and duranodic. Cover available.

• Warranty: 10-year.

Why choose the S. Parker 955BC

S. Parker builds dependable commercial closers at a sensible price, and the 955BC brings that value to the heavy-duty, fire-rated end of the range where it's needed most. You get the large-door capacity, the UL fire listing, and the backcheck and dual speed controls that protect both the door and the hardware, without paying a premium-brand price. For replacement on a big door, the template match with Parker 500, Yale 50, and Norton 1600 closers is the time-saver, because you reuse the existing prep.

One thing to confirm before ordering: the 955BC ships without the parallel arm bracket, so order that separately if your installation needs parallel-arm mounting, and confirm your door width falls within the 54 inch interior or 48 inch exterior rating.

Order the S. Parker 955BC from American Locksets

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