Cal-Royal N900PBF-DA (with Delayed Action feature), heavy duty, full feature, ADA Compliant, multi-size spring from 1 through 6, commercial grade, hydraulic door closer, for 3-hour fire rated wood or metal doors, for interior and exterior doors with heavy traffic and extreme temperatures, like office buildings, shopping centers and other commercial buildings, meeting the highest industry standards grade 1, for right-hand or left-hand doors, up to 48 inches in width and weighing up to 260 pounds, for standard, top-jamb or parallel installation. DESCRIPTIONAvailable in painted aluminum, duranodic (painted dark bronze), painted gold, or painted white. This door closer does NOT have a ‘Hold Open’ option. This door closer does have the (DA) ‘Delayed Action’ option.Adjustable Delayed Action (DA) is a feature that delays the closing of the door and will hold the door open from Approximately 120° to 70° degrees for a specific amount of time before closing automatically to allow more time to get through the doorway and can be adjusted for up to a minute. Preset at the factory for approximately 20 seconds.This feature can be helpful for handicapped or elderly with disabilities or mobility issues in health care facilities such as hospitals and nursing homes. It provides sufficient time for persons on crutches or in wheelchairs to pass through a door without concern of it closing. At the same time it can accommodate the facility’s staff with movement of food service carts, beds, and other wheeled traffic, or for doors between office and factory/warehouse facilities, doors to workshops or laboratories, to kitchen and food processing areas.After the adjusted time delay the door closer will resume its speed and close the door completely. BHMA Certified.UL Listed for 3-hour fire rated doors. Conforms to standards UL10C and UBC7-2-1997Meets and exceeds ANSI standard A156.4 GRADE 1(Grade 1 is the highest grade door closer, and it has been tested for over 2 million door cycles of opening and closing). This door closer is designed to comply with the Americans with Disabilities Act (ADA) and to encompass all levels of ANSI classification. Barrier Free (BF) meets ADA regulation. Engineered with reduced spring power to provide easier opening (less then 5 pounds of force) for handicapped or elderly. Has 6 attaching holes for extra secure mounting to door or frame. This closer has three separate adjustable valves for adjusting ‘closing speed’ (or swing speed), ‘latching speed’ and ‘backcheck’. ‘Closing speed’ (or ‘swing speed’) is the speed at which the door closes from the open position to the point where it is a few inches away from closing the door all the way, before hitting its latching point.’Latching speed’ creates more force and speed for the door at the last several inches at which the door latches firmly closing the door all the way.’Backcheck’ is a feature that prevents the door from opening too fast and slamming against the wall or other objects. The opening swing is slowed at a certain degree and controls the speed of the door during opening. (When adjusting make sure not to completely unscrew the adjustment screw, or the cylinder could come apart and start leaking oil.Make very minor adjustments, maybe 1/8″ of a turn at a time until you’re happy with the adjustment.Door closers require periodic adjustments to ensure that the door closes and latches properly at the correct speed). Multi-Sized. Can be adjusted to size 1 through 6. Factory preset to size 3. The size of the door closer should be adjusted depending on the width of the door.Please make sure to read the installation instructions and templates in the box.You can also find it by visiting Cal-Royal’s website. Universal application, non-handed, designed for all standard installations. Fully reversible, non-handed for standard, top-jamb or parallel installation. Can be installed on the push side (with included parallel arm bracket) or pull side of the door. For right hand, left hand, right hand reverse and left hand reverse doors. It can also be installed on the top door jamb (door frame), on the push side of the door. For exterior doors up to 48 inches in width and weighing up to 260 pounds.For interior doors up to 60 inches in width and weighing up to 260 pounds.(Minimum door width is 24 inches). Packaging includes one door closer, full plastic cover, parallel arm bracket, wood screws, self-tapping machine screws, sex bolts, instructions and template. Lifetime manufacturer warranty. This door closer can be installed in a way to allow the door to open to a maximum of 180° degrees. For door closer size specifications, adjustments, installation instructions, mounting holes, mounting options, templates, and other information please read the installation instructions and templates in the box. You can also find it by visiting Cal-Royal’s website. Please check out my eBay store for more heavy duty door closers or click on these links. Cal-Royal N900PBF Grade 1 Automatic Hydraulic Spring Auto Door Closer 4 Colors | eBayCal-Royal CR801 / CR801S Automatic Hydraulic Spring Auto Door Closer, 3 Colors | eBay Cal-Royal CR441, Grade 1, Automatic Hydraulic Spring Auto Door Closer, 3 Colors | eBay PAYMENTPayment must be made within 7 days unless prior arrangements were made. SHIPPINGItems are packed and shipped safely in a box. This item ships USPS Priority mail with tracking and signature confirmation, so you will have to sign for the package. If you do not want to have to sign for the package, you have to let us know in advance, and once the USPS tracking shows it was delivered at your location, you will be responsible for lost or stolen package. We ship within 2 business days of payment. We only ship to eBay and PayPal confirmed addresses. We only ship to the United States. Please do not hesitate to contact us with any questions you might have. we will get back to you ASAP. RETURNS If for whatever reason you like to return this item, please contact us within 14 days of receiving the item. Buyer pays return shipping. Returned item must be unopened in its original packaging. Refund of purchase price will be given to your PayPal account. FEEDBACK We automatically leave positive feedback for every purchase once the item is paid for. If you are satisfied with our service, we ask you to please take a minute to give us your five star positive feedback, it helps a lot. If you are happy with this product, please leave a product review. Your satisfaction is important to us, we want to have you as another happy costumer. If for any reason you feel we do not deserve your five star positive feedback, please let us know, give us a chance to make things right for you. We will do our best.