BEST Door Closers

BEST HD8000 and EHD9000: Grade 1 surface closers

BEST makes two surface closer series in our catalog, and both are listed as Grade 1 with an adjustable size from 1 to 6. The HD8000 is described as a Grade 1 hydraulic surface closer for institutional or high-traffic commercial doors, and every HD8016 listing is non-handed. The EHD9000 is described by BEST as built for the highest traffic areas, with adjustable backcheck and a plastic cover on the EHD9016 AF90P. Because the spring size is adjustable 1 to 6, one closer covers many door widths and weights.

Choose the arm before the closer

The arm decides where the closer mounts and what it can do, so pick it first. BEST lists the HD8016 with many arms; the letters after the model are the arm code.

Regular, top jamb or parallel arm mounting

Regular arm mounting puts the closer on the pull side of the door with the arm on the frame. Top jamb mounting puts the closer on the frame above the door on the push side. Parallel arm mounting puts the closer on the push side of the door, with the arm folded parallel to it, which keeps hardware off the corridor side and is common on public doors. Tri mount arms such as the AF80P and AF90P are boxed to cover all three, which is useful when the final mounting is not yet decided.

Hold open, stop and delayed action

Hold open arms keep the door open at a set angle, and stop arms limit how far it opens. Hold open is not allowed on fire doors that must close on their own; those openings follow NFPA 80 and need a release on alarm instead. Compression stops (SDST, SIS, SISJH) cushion the door at the stop. The HD8016DA AF80P adds delayed action, which slows the start of the closing cycle to give people with mobility aids or carts more time to pass.

How to choose a heavy duty door closer

For heavy or high-traffic doors, choose a Grade 1 closer with enough spring size, a strong arm and backcheck. The ANSI/BHMA A156.4 standard covers door closers, and Grade 1 is its heaviest duty level. Set the size for the door width and location (exterior doors need more force against wind), and use a parallel arm with a stop where the door could be thrown open. For accessible openings, the closing speed and opening force are adjusted on site under the ADA 2010 Standards 404.2.8 and 404.2.9.

BEST closer parts and replacement bodies

When an HD8000 leaks or will not control the door, the HD8016 LA (less arm) lets you replace the body and keep a good arm. Arms, covers and other parts are listed in BEST door closer parts. The BEST HD8000 and EHD9000 closer catalogs are attached to our product pages.

Most requested BEST closers

The BEST closers our customers look up most often right now:

• BEST HD8016 AF80P Heavy Duty Surface Closer, Tri Mount Parallel Arm
• BEST HD8016 PHP Surface Closer, Plunger Hold Open Arm
• BEST EHD9016 AF90P Surface Closer, Tri Mount Parallel Arm
• BEST HD8016 SDST Surface Closer, Hold Open and Compression Stop

Related categories: commercial door closers, surface door closers, LCN door closer parts and BEST HD8000 Series.

What to have ready when ordering a BEST closer

• Mounting: regular, top jamb or parallel arm, and push or pull side.
• Arm function: standard, hold open, stop, compression stop or delayed action.
• Door width, weight and interior or exterior location.
• Fire-rated door or not (no mechanical hold open on fire doors).
• Finish to match the frame and other closers.

Replacing closers across a building? Request a quote, and schools and agencies can submit a government or school PO. Orders placed before 3:00 p.m. ET on business days ship the same day after card approval, and ground shipping is free on orders of $450+. Call 718-814-6300 to pick the right arm.

The tables and selection notes on this page are compiled by National Lock Supply from BEST catalogs and product listings. Last reviewed: November 2026.