Dust excluding floor socket, round


Commonly used when flush bolts are fitted at the bottom, to prevent grit and dust to obstruct correct locking of the bolt.


OLDA FS R has 22 mm stroke length, for stronger locking and adaptation for flush bolts in connection with automatic drop seals.

Available in two versions, with spring loaded opening Ø 13 mm, which fit bolts between Ø 8 – 12 mm, and with opening Ø 16 mm, which fit bolts between Ø 10 – 15 mm.

Manufactured in stainless steel – for longer life span.


Recommended to secure the function and increase the life span of bolts, especially in doors with high frequency of passage.

Dust excluding floor sockets are commonly used to complement automatic and manual flush bolts. They also fit other types of bolts, e.g. espagnolettes or locking of folding doors.


OLDA FS is mainly glued in solid floors made of tile, marble, stone and wood, but also aluminium and steel, which gives a flexible adaptation to the bolt.

The two grooves in the casing facilitates firm glueing in the floor. And the covered bottom prevents glue from entering the product and affecting the spring function.

The outer diameter is 22 mm and the total height is 50 mm. When the products is mounted, visible height is only 2 mm.

When screw mounting of OLDA FS R is desired, use the special developed mounting bracket OLDA FS R30.


  • Stroke length: 22 mm
  • Spring loaded opening:
    • Ø 13 mm (FS 12) fits bolt Ø 8-12 mm
    • Ø 16 mm (FS 15) fits bolt Ø 10-15 mm
  • Dimensions:
    • outer diameter: 22 mm
    • height: 50 mm
    • forend: round Ø 30 x 2 mm
  • Installation: gluing in sill or floor
    • with suitable glue.
  • Material: stainless steel, stainless steel spring

Product ID:

  • OLDA FS R12 (Ø13): 20-117-1201-30xx
  • OLDA FS R15 (Ø16): 20-117-1501-30xx

note. Glue for installation is not included.

  • OLDA FS R30 (bracket Ø30/50):
    • ID: 28-117-0011-30xx

note. Screws for installation are ordered separately, or as a part of different product KITs.

Related products:

OLDA FS 12 and 15
– stainless-steel dust-excluding floor sockets for screw fitting.

Complementary products:

OLDA flush bolts

Also see:

Accessory guide OLDA (pdf)

OLDA Fittings school


product documents
product leaflet
pdf: FS R12   FS R15   FS R30

pdf: FS R12   FS R15   FS R30

pdf: FS R12   FS R15   FS R30
product views - 2D

pdf: FS R12   FS R15   FS R30
dxf: FS R12   FS R15   FS R30
dwg: FS R12   FS R15   FS R30
product models - 3D

stp: FS R12   FS R15   FS R30
igs: FS R12   FS R15   FS R30
dwg: FS R12   FS R15   FS R30
sat: FS R12   FS R15   FS R30
ipt: FS R12   FS R15   FS R30
stl: FS R12   FS R15   FS R30

pdf 3D: FS R12   FS R15   FS R30
SKU: FS R12 / FS R15 Category: