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Dorma RTS88 Door Closer-
The Dorma RTS88 Door Closer is an overhead concealed closer for both single and double-acting doors. It is one of the more popular overhead concealed closers on the market today. The RTS88 will consist of a steel cam, rollers, and springs housed in a compact cast iron body. Closers will be capable of being installed in minimum 1-3/4" x 4" headers. RTS88 will have maximum door opening to 90º or 105º, trim conditions permitting. Sweep and latch speed will be controlled by two noncritical adjustment valves from 90º or 105º to closed. Built-in pressure relief valve will protect the closer from abuse caused by forced closing. A mechanical backcheck combined with a positive stop at 90º or 105º will be provided to protect the door and frame. The RTS88 closer will be available with hold open at 90º or 105º, or without hold open. The product shown here is just the replacement cylinder.
RTS88 -
Dorma 8900 Door Closer Series
The heavy-duty 8900 Series non-handed surface applied closer
with adjustable spring power and backcheck positioning adjustment.
The 8900 has intensity adjustable hydraulic backcheck
that will take effect at approximately 65º. The 8900 has two
independent, noncritical adjustment valves to control sweep and
latch closing speeds. The backcheck positioning valve maintains
an effective backcheck range on parallel arm applications. The
8916 will be available with field adjustable spring power from size
1 to 6 for barrier-free requirements.2-1/8" x 5" hole spacing
8900-