Register to unlock your exclusive B2B prices and start shopping. Sign up now!

OBO Bettermann Lighting protection - Page 19

Order only

OBO Bettermann Separating Piece FL 30, 8-10 mm, Steel, Hot-Dip Galvanised

5,46 € per pcs
MOQ: 20
This price is valid until 24.12.2026
Subtotal: 109,20 € MOQ: 20
EAN: 4012195424635
MPN: 5336309
Package: 20
Box: 80
Pallet: 6080
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Separating Piece 233 VA, 8-10 mm, Stainless Steel

5,77 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195424758
MPN: 5336341
Package: 10
Box: 120
Pallet: 7680
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Bi-Metal Separating Piece 233 ZV, FL/Rd×FL/Rd, Stainless Steel, Fit Rd 8-10/fl30×Rd 8-10/fl30 Mm, Material Lower Part V A, Material Upper Part Cu

13,59 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 135,90 € MOQ: 10
EAN: 4012195424819
MPN: 5336376
Package: 10
Box: 120
Pallet: 7680
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Tube Earthing Clamp 301 DIN-90, 90 mm, Steel, Strip Galvanised, Connection Hole 11 Mm

3,92 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 39,20 € MOQ: 10
EAN: 4012195425656
MPN: 5350093
Package: 10
Pallet: 1120
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Tube Earthing Clamp 301 V-VA, 420 mm, Stainless Steel, Connection Hole 11 Mm

5,74 € per pcs
MOQ: 5
This price is valid until 24.12.2026
Subtotal: 28,70 € MOQ: 5
EAN: 4012195426912
MPN: 5350905
Package: 5
Box: 50
Pallet: 1300
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Tube Earthing Clamp 301 DIN-120, 120 mm, Steel, Strip Galvanised, Connection Hole 11 Mm

4,48 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 44,80 € MOQ: 10
EAN: 4012195425830
MPN: 5350123
Package: 10
Pallet: 760
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Tube Earthing Clamp 301 S-VA-120, 120 mm, Stainless Steel

5,06 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 50,60 € MOQ: 10
EAN: 4012195427155
MPN: 5351286
Package: 10
Pallet: 960
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Tube Earthing Clamp 301 S-CU-120, 120 mm, Copper

6,35 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 63,50 € MOQ: 10
EAN: 4012195427278
MPN: 5351472
Package: 10
Pallet: 960
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Stand for Fangfix Junior System F-FIX-JUNIOR, RD10, Diameter 150 mm, Aluminium, Nominal Size Ø 10 Mm

14,97 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 149,70 € MOQ: 10
EAN: 4012195034872
MPN: 5403308
Package: 10
Pallet: 150
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Stand for Fangfix System F-FIX-16B, 16kg, Diameter 373 mm, Min. 16 Kg, Concrete, Base

32,14 € per pcs
MOQ: 54
This price is valid until 24.12.2026
Subtotal: 1 735,56 € MOQ: 54
EAN: 4012195110637
MPN: 5403205
Package: 54
Pallet: 54
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Fangfix Reducing Sleeve 101 RH-16, 16 mm, PA, Black, Length 48 mm

0,463 € per pcs
MOQ: 25
This price is valid until 24.12.2026
Subtotal: 11,57 € MOQ: 25
EAN: 4012195674924
MPN: 5408101
Package: 25
Box: 300
Pallet: 30000
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Insulating Rod , 6000 mm, Fibre-Glass-Reinforced Plastic, Air-Termination Rod, Nominal Size Ø 20 Mm

203,85 € per pcs
MOQ: 5
This price is valid until 24.12.2026
Subtotal: 1 019,25 € MOQ: 5
EAN: 4012195636731
MPN: 5408148
Package: 5
Pallet: 200
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Lightning Protection Connector 101 IDK DK, 20 mm, Aluminium, Connection Round Conductor, L 125 mm

43,33 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 433,30 € MOQ: 10
EAN: 4012195895817
MPN: 5408245
Package: 10
Pallet: 1680
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Lightning Protection Connector 101 IT T-connector, 20 mm, Aluminium, Connection Round Conductor, L 65 mm

22,83 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 228,30 € MOQ: 10
EAN: 4012195681496
MPN: 5408156
Package: 10
Pallet: 2240
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Lightning Protection Connector 101 IK Cross-connector, 20 mm, Aluminium, Connection Round Conductor, L 100 mm

33,15 € per pcs
MOQ: 10
This price is valid until 24.12.2026
Subtotal: 331,50 € MOQ: 10
EAN: 4012195895879
MPN: 5408296
Package: 10
Pallet: 2240
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Insulated Air-Termination Rod for Inner-Routed Iscon , 6000 mm, With Side Exit, Internal, Fibre-Glass-Reinforced Plastic, Air-Termination Rod

1 029,47 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196647811
MPN: 5408876
Package: 1
Pallet: 40
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Insulated Air-Termination Rod for Inner-Routed Iscon , 4000 mm, With Side Exit, Internal, Fibre-Glass-Reinforced Plastic, Air-Termination Rod

771,69 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196647804
MPN: 5408874
Package: 1
Pallet: 40
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Insulated Air-Termination Rod for Inner-Routed Iscon , 8000 mm, With Side Exit, Internal, Fibre-Glass-Reinforced Plastic, Air-Termination Rod

1 364,80 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196647828
MPN: 5408878
Package: 1
Pallet: 36
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Holder 101 HV-16 Iso-Combi, 150×100×65 mm, V Support, Stainless Steel, D Ø 16 mm

54,12 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195613411
MPN: 5408990
Package: 1
Box: 10
Pallet: 1120
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Cable Bracket 113 B-Z16, 16 mm, With Cu Crossbar Rd 8−10 Mm, Die-Cast Zinc, Galvanised, Holder Fastening Type Drill Hole with M-Thread

2,43 € per pcs
MOQ: 100
This price is valid until 24.12.2026
Subtotal: 243,00 € MOQ: 100
EAN: 4012195459071
MPN: 5412706
Package: 100
Pallet: 11200
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Air-Termination/earth Entry Rod 200 V4A-2000, 2000 mm, Rounded-Off on Both Ends V A, Stainless Steel, Nominal Size Ø 16 Mm

165,14 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195331575
MPN: 5420539
Package: 1
Box: 10
Pallet: 200
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Air-Termination/earth Entry Rod 101 F1000 Interception/earth, 1000 mm, With Connection Tabs, Steel, Hot-Dip Galvanised, Air-Termination Rod

25,02 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195430094
MPN: 5424100
Package: 1
Box: 10
Pallet: 500
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Air-Termination/earth Entry Rod 101 F2000 Interception/earth, 2000 mm, With Connection Tabs, Steel, Hot-Dip Galvanised, Air-Termination Rod

37,49 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195430339
MPN: 5424208
Package: 1
Box: 10
Pallet: 250
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Earth Entry Rod 204 KS-2500, 2500 mm, Tapered and Partially Insulated, Steel, Hot Galvanised, Nominal Size Ø 16/10 Mm

53,65 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195901570
MPN: 5430062
Package: 1
Pallet: 250
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Earthing Connection Block 1805 2 FT, 50×5 mm, Steel, Hot-Dip Galvanised, L 200 mm

14,27 € per pcs
MOQ: 1
This price is valid until 01.01.2099
EAN: 4012195379096
MPN: 5016029
Package: 1
Box: 10
Pallet: 450
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Expansion Piece , 40×5 mm, Aluminium

149,74 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195379270
MPN: 5016142
Package: 1
Box: 25
Pallet: 900
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Earthing Connection Block 1805 6 VA, 404 mm, Stainless Steel, A 314 mm

42,59 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195922278
MPN: 5016126
Package: 1
Box: 10
Pallet: 360
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Galvanised Steel Flat Conductor for Earth 5052 DIN, 20×2.5 mm, Steel, Hot-Dip Galvanised, Nomal Ring (Approx. Kg) 50, Nomal Ring (Approx. M) 122

2,37 € per m
MOQ: 122
This price is valid until next price list or while stock lasts
Subtotal: 289,14 € MOQ: 122
EAN: 4012195680468
MPN: 5019340
Package: 122
Pallet: 2440
EDT to our warehouse: 2-4 weeks
Order only

OBO Bettermann Flat Conductor , 30×3 mm, Galvanised Steel for Foundation Earthing, Hot-Dip Galvanised, Nomal Ring (Approx. Kg) 21, Nomal Ring (Approx. M) 30

3,94 € per m
MOQ: 30
This price is valid until next price list or while stock lasts
Subtotal: 118,20 € MOQ: 30
EAN: 4012195381310
MPN: 5020808
Package: 30
Pallet: 960
EDT to our warehouse: 2-4 weeks
Order only

OBO Bettermann Round Conductor RD 8-FT, 8 mm, 1 Individual Wires, Galvanised Steel, Hot-Dip Galvanised, Material Property Miscellaneous

1,16 € per m
MOQ: 1
This price is valid until next price list or while stock lasts
EAN: 4012195381556
MPN: 5021081
Package: 125
Pallet: 1250
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Round Conductor RD 10-PVC, 10 mm, 1 Individual Wires, Galvanised Steel with PVC Jacketing, Black, Hot-Dip Galvanised

7,12 € per m
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195381730
MPN: 5021162
Package: 75
Pallet: 525
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Round Conductor RD 8-ST CU, 8 mm, 1 Individual Wires, Copper Sheathed, Steel, Copper-Plated

6,83 € per m
MOQ: 2000
This price is valid until next price list or while stock lasts
Subtotal: 13 660,00 € MOQ: 2000
EAN: 4012196564804
MPN: 5021380
Package: 100
Pallet: 2000
EDT to our warehouse: 2-4 weeks
Order only

OBO Bettermann Round Conductor RD 8-CU 25, 8 mm, 1 Individual Wires, Copper, Nomal Ring (Approx. Kg) 25, Nomal Ring (Approx. M) 55

25,65 € per m
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196636822
MPN: 5021484
Package: 55
Pallet: 550
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Round Conductor RD 10-V4A 20, 10 mm, 1 Individual Wires, Stainless Steel A4, Material Property Miscellaneous, Nomal Ring (Approx. Kg) 12

6,05 € per m
MOQ: 100
This price is valid until 01.01.2099
Subtotal: 605,00 € MOQ: 100
EAN: 4012196282425
MPN: 5021640
Package: 20
Pallet: 400
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Round Conductor RD 10-V4A, 10 mm, 1 Individual Wires, Stainless Steel A4, Material Property Miscellaneous, Nomal Ring (Approx. Kg) 50

6,05 € per m
MOQ: 100
This price is valid until 01.01.2099
Subtotal: 605,00 € MOQ: 100
EAN: 4012195680581
MPN: 5021647
Package: 80
Pallet: 560
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Spacer , 40 mm, Ø 6.5, Steel, Hot-Dip Galvanised

2,62 € per pcs
MOQ: 25
This price is valid until 24.12.2026
Subtotal: 65,50 € MOQ: 25
EAN: 4012195383895
MPN: 5032040
Package: 25
Box: 300
Pallet: 19200
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Earthing Pipe Clamp 925, 1/2", 19.3–21.3 mm, 1 Conductors, Steel, Electrogalvanised

2,02 € per pcs
MOQ: 1
This price is valid until next price list or while stock lasts
EAN: 4012195385332
MPN: 5040078
Package: 25
Box: 300
Pallet: 14400
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Earthing Pipe Clamp 925, 3/4", 24.9–26.9 mm, 1 Conductors, Steel, Electrogalvanised

2,08 € per pcs
MOQ: 25
This price is valid until 24.12.2026
Subtotal: 52,00 € MOQ: 25
EAN: 4012195385394
MPN: 5040094
Package: 25
Box: 250
Pallet: 9000
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Clip Branch Terminal 4-16mm, Parallel, Brass, Nickel-Plated, Suitable for Round Conductor

6,43 € per pcs
MOQ: 50
This price is valid until 24.12.2026
Subtotal: 321,50 € MOQ: 50
EAN: 4012195668565
MPN: 5064017
Package: 50
Box: 300
Pallet: 30000
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Protection Set PS3-B+C-320, 3-Pole, 320 V

575,35 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195806813
MPN: 5089755
Box: 1
Pallet: 168
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Arrester V10 COMPACT 150 V10, IP20, 3+npe, Follow Current Quenching Capacity (Eff) 0.1 Ka, Nominal Voltage Ac (50/60 Hz) 120 V, Lightning Protection Zone Lpz 1→3

90,56 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195246268
MPN: 5093378
Package: 1
Box: 24
Pallet: 1152
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Fc-Isdn-D Finecontroller FC-ISDN-D, 230 V

114,21 € per pcs
MOQ: 1
This price is valid until next price list or while stock lasts
EAN: 4012195047223
MPN: 5092812
Package: 1
Box: 20
Pallet: 640
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Plug-in Arrester V10 320 V, IP20, 1-Pole, Max. Mains-Side Overcurrent Protection 125, Nominal Voltage Ac (50/60 Hz) 320 V, Installation Type On Basic Element

15,81 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195012832
MPN: 5093404
Package: 1
Box: 32
Pallet: 2048
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Combined Arrester V50-1-150, 150 V, IP20, 1-Pole, PA, Max. Mains-Side Overcurrent Protection 160 A Gl/gg

53,80 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196398638
MPN: 5093440
Package: 1
Box: 36
Pallet: 1728
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Arrester V10 280 V, IP20, 1-Pole, Max. Mains-Side Overcurrent Protection 125, Nominal Voltage Ac (50/60 Hz) 230 V, Lightning Protection Zone Lpz 1→3

30,82 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195406778
MPN: 5093415
Package: 1
Box: 32
Pallet: 2048
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Plug-in Arrester V50 385 V, IP20, Max. Mains-Side Overcurrent Protection 160 A Gl/gg, TOV Voltage ‒ Withstand Mode ‒ 5 S 510 V, Installation Type DIN Rail 35 Mm, SPD to Iec 61643-11 Class I+ii

52,39 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196334681
MPN: 5093510
Package: 1
Box: 30
Pallet: 4320
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Combined Arrester V50-2+NPE-280, 280 V, IP20, 2-Pole + Npe, Max. Mains-Side Overcurrent Protection 160 A Gl/gg, TOV Voltage ‒ Withstand Mode ‒ 200 Ms 1200 V

136,16 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196159680
MPN: 5093524
Package: 1
Box: 18
Pallet: 864
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Combined Arrester V50-1-320, 320 V, IP20, 1-Pole, PA, Max. Mains-Side Overcurrent Protection 160 A Gl/gg

53,80 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196398447
MPN: 5093540
Package: 1
Box: 36
Pallet: 1728
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Combined Arrester V50-3+NPE-320, 320 V, IP20, 3-Pole + Npe, PA, Max. Mains-Side Overcurrent Protection 160 A Gl/gg

221,76 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196398522
MPN: 5093554
Package: 1
Box: 18
Pallet: 864
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Twincombicontroller V50-B+C 3 TCC, 3-Pole, 280 V

284,15 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196094400
MPN: 5093600
Package: 1
Box: 8
Pallet: 320
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Protection V20-C 2-PH-1000, 1000 V DC, IP20, 2pole, 2-Pole for Earthed P v Systems, Max. Mains-Side Overcurrent Protection 125

62,31 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195478669
MPN: 5094617
Package: 1
Box: 32
Pallet: 2048
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surgecontroller V20-C 1+NPE-385, 385 V

70,42 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195382980
MPN: 5094666
Package: 1
Box: 32
Pallet: 2048
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surgecontroller V20-C 2-150, 150 V

51,91 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195382881
MPN: 5094679
Package: 1
Box: 32
Pallet: 2048
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surgecontroller V20-C 4-385, 4-Pole, 385 V

102,04 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195240167
MPN: 5094708
Package: 1
Box: 24
Pallet: 1152
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surgecontroller V20-C 3-385, 3-Pole, 385 V

70,70 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195240150
MPN: 5094705
Package: 1
Box: 24
Pallet: 1152
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Arrester V20-C 1+FS-280, 280 V, IP20, 1-Pole with Remote Signalling, 1-Pole + FS, Max. Mains-Side Overcurrent Protection 125

36,06 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012195406679
MPN: 5094727
Package: 1
Box: 32
Pallet: 2048
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Arrester V20-3-320, 320 V, IP20, 3-Pole, Max. Mains-Side Overcurrent Protection 160 A Gl/gg, TOV Voltage ‒ Withstand Mode ‒ 5 S 335 V

85,22 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196159864
MPN: 5095173
Package: 1
Box: 18
Pallet: 864
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Arrester V20-3-550, 550 V, IP20, 3-Pole, Max. Mains-Side Overcurrent Protection 160 A Gl/gg, TOV Voltage ‒ Withstand Mode ‒ 5 S 700 V

101,14 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196160006
MPN: 5095213
Package: 1
Box: 18
Pallet: 864
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Arrester V20-3+NPE-320, 320 V, IP20, 3-Pole + Npe, Max. Mains-Side Overcurrent Protection 160 A Gl/gg, TOV Voltage ‒ Withstand Mode ‒ 200 Ms 1200 V

104,40 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196161638
MPN: 5095263
Package: 1
Box: 18
Pallet: 864
EDT to our warehouse: 4-6 weeks
Order only

OBO Bettermann Surge Arrester V20-4+FS-385, 385 V, IP20, 4-Pole with Remote Signalling, Max. Mains-Side Overcurrent Protection 160 A Gl/gg, Switching Power Dc 230 V; 0.1 A / 75 V; 0.5 A

135,51 € per pcs
MOQ: 1
This price is valid until 24.12.2026
EAN: 4012196162895
MPN: 5095304
Package: 1
Box: 18
Pallet: 864
EDT to our warehouse: 4-6 weeks