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  NHN-SN 303
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Home > Door Closer > Floor Spring > NHN SN-303 Floor Spring
NHN SN-303 Features

NHN SN-303 Floor spring with NHN-Japan stainless steel cover plate. Variable closing speed.
Closing strength EN 3 to 5 by model.

NHN SN-303 is a double action floor spring, which has been specially developed for aluminium and toughened glass door industries.

Interchange - Equivalent fitting with DORMA BTS-84.

Installation - Non-Handed install depth of just 40mm. Changeable spindle insert available to suit field conditions.

Adjustment - Independent regulating valves for closing (120-15°) and latching (15-0°) speeds.

Hold Open - Easy door adjustment for 90° hold open or non-hold open available.

Versatile - Accommodates door weights from 70kg up to 180kg measuring up to 1300mm wide.

Guarantee - Free replacement ex-works if any closer proves defective by reason either of faulty manufacture or defect in materials.

Top Pivot (DMA)
Bottom Pivot (NSA)
Standard Strap
Iron Top Pivot
Model SN-303
Variable Closing Force Spring Strength (EN) 3 to 5
Door Width / Door Weight 950 ~ 1050mm / 70 ~ 110kg SN-303
  1050 ~ 1250mm / 110 ~ 130kg SN-304
Standard Doors 1050 ~ 1300mm / 150 ~ 180kg SN-305
Body Dimension (mm) Length 306
Height 108
Projection 40
Arm Standard Y
  Offset arm X
Centre Hung Y
Cam-action Y
Dual Door Angle of Opening 130°
Sweep Speed Adjustable Y
Latching Speed Adjustable Y
Hold-Open Without Hold Open O
at 90 hold-open Y
Non-Handed Y
Y = Yes | N = No | O = Option

MICOM & NHN are Divisions and Registered Trademarks of Kenwa Co., Ltd. Osaka, Japan. Copyright 2009