Registreeru, et avada oma eksklusiivsed B2B hinnad ja alustada ostlemist. Registreeru kohe!

Valgustuse ajal - Lk 57

FARO Forlight Ideal Lux Kanlux LEDS-C4 LEDVANCE LUCIDE Legrand Lena Lighting MAYTONI NORDLUX Nowodvorski OSRAM PHILIPS SCHRACK SLV Schneider Electric Shada Trio
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø1200 ø900) LED 124W LED warm-white 2700K ON-OFF White 6239lm
3 451,14 €
Hind kehtib kuni 31.12.25
EAN: 8445386775395
MPN: CD4M-00V9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø1200 ø900) LED 124W LED warm-white 3000K ON-OFF White 6781lm
3 451,14 €
Hind kehtib kuni 31.12.25
EAN: 8445386775425
MPN: CD4M-00W9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø1200 ø900) LED 124W LED neutral-white 4000K ON-OFF Black 7323lm
3 447,90 €
Hind kehtib kuni 31.12.25
EAN: 8445386775449
MPN: CD4M-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø1200 ø900) LED 124W LED neutral-white 4000K ON-OFF Gold 7323lm
4 313,53 €
Hind kehtib kuni 31.12.25
EAN: 8445386775456
MPN: CD4M-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø900 ø600) LED 91W LED warm-white 2700K ON-OFF Black 4756lm
3 088,88 €
Hind kehtib kuni 31.12.25
EAN: 8445386775500
MPN: CD4N-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø900 ø600) LED 91W LED warm-white 3000K ON-OFF Gold 5169lm
3 735,13 €
Hind kehtib kuni 31.12.25
EAN: 8445386775555
MPN: CD4N-00W9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø900 ø600) LED 91W LED warm-white 3000K ON-OFF Black 5169lm
3 088,88 €
Hind kehtib kuni 31.12.25
EAN: 8445386775548
MPN: CD4N-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø900 ø600) LED 91W LED neutral-white 4000K ON-OFF Black 5582lm
3 088,88 €
Hind kehtib kuni 31.12.25
EAN: 8445386775562
MPN: CD4N-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward Double Rings (ø900 ø600) LED 91W LED neutral-white 4000K ON-OFF Gold 5582lm
3 735,13 €
Hind kehtib kuni 31.12.25
EAN: 8445386775586
MPN: CD4N-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Horitzontal LED 258W LED warm-white 2700K ON-OFF Gold 12918lm
4 036,06 €
Hind kehtib kuni 31.12.25
EAN: 8445386775760
MPN: CD4P-00V9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Horitzontal LED 258W LED warm-white 2700K ON-OFF White 12918lm
3 930,96 €
Hind kehtib kuni 31.12.25
EAN: 8445386775753
MPN: CD4P-00V9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Horitzontal LED 258W LED warm-white 3000K ON-OFF Black 14042lm
3 900,07 €
Hind kehtib kuni 31.12.25
EAN: 8445386775777
MPN: CD4P-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Horitzontal LED 258W LED neutral-white 4000K ON-OFF Black 15166lm
3 900,07 €
Hind kehtib kuni 31.12.25
EAN: 8445386775807
MPN: CD4P-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø600 Recessed LED 39W LED warm-white 3000K ON-OFF Gold 2418lm
1 278,72 €
Hind kehtib kuni 31.12.25
EAN: 8445386775913
MPN: CD5A-00W9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø600 Recessed LED 39W LED warm-white 3000K ON-OFF Black 2418lm
1 076,29 €
Hind kehtib kuni 31.12.25
EAN: 8445386775890
MPN: CD5A-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø600 Recessed LED 39W LED neutral-white 4000K ON-OFF Black 2611lm
1 076,29 €
Hind kehtib kuni 31.12.25
EAN: 8445386775920
MPN: CD5A-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø1200 Recessed LED 72W LED warm-white 2700K ON-OFF Gold 3708lm
1 868,42 €
Hind kehtib kuni 31.12.25
EAN: 8445386776002
MPN: CD5B-00V9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø1200 Recessed LED 72W LED neutral-white 4000K ON-OFF Gold 4352lm
1 868,42 €
Hind kehtib kuni 31.12.25
EAN: 8445386776064
MPN: CD5B-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø2000 Recessed LED 129W LED warm-white 3000K ON-OFF White 7021lm
3 223,30 €
Hind kehtib kuni 31.12.25
EAN: 8445386776156
MPN: CD5C-00W9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø3000 Recessed LED 190W LED warm-white 2700K ON-OFF Black 9391lm
4 620,11 €
Hind kehtib kuni 31.12.25
EAN: 8445386776224
MPN: CD5D-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø3000 Recessed LED 190W LED warm-white 3000K ON-OFF Gold 10208lm
4 668,45 €
Hind kehtib kuni 31.12.25
EAN: 8445386776279
MPN: CD5D-00W9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø3000 Recessed LED 190W LED neutral-white 4000K ON-OFF Gold 11025lm
4 668,45 €
Hind kehtib kuni 31.12.25
EAN: 8445386776309
MPN: CD5D-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø900 Recessed LED 53W LED warm-white 2700K ON-OFF White 2531lm
1 367,54 €
Hind kehtib kuni 31.12.25
EAN: 8445386776361
MPN: CD5K-00V9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø900 Recessed LED 53W LED warm-white 3000K ON-OFF White 2751lm
1 367,54 €
Hind kehtib kuni 31.12.25
EAN: 8445386776392
MPN: CD5K-00W9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø900 Recessed LED 53W LED neutral-white 4000K ON-OFF Black 2971lm
1 365,26 €
Hind kehtib kuni 31.12.25
EAN: 8445386776408
MPN: CD5K-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward ø900 Recessed LED 53W LED neutral-white 4000K ON-OFF White 2971lm
1 367,54 €
Hind kehtib kuni 31.12.25
EAN: 8445386776415
MPN: CD5K-00X9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Hortizontal Recessed LED 258W LED warm-white 2700K ON-OFF Black 12918lm
4 223,18 €
Hind kehtib kuni 31.12.25
EAN: 8445386776460
MPN: CD5P-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Hortizontal Recessed LED 258W LED warm-white 2700K ON-OFF Gold 12918lm
4 371,13 €
Hind kehtib kuni 31.12.25
EAN: 8445386776484
MPN: CD5P-00V9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Hortizontal Recessed LED 258W LED warm-white 3000K ON-OFF Black 14042lm
4 223,18 €
Hind kehtib kuni 31.12.25
EAN: 8445386776507
MPN: CD5P-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Hortizontal Recessed LED 258W LED warm-white 3000K ON-OFF White 14042lm
4 254,32 €
Hind kehtib kuni 31.12.25
EAN: 8445386776491
MPN: CD5P-00W9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Hortizontal Recessed LED 258W LED neutral-white 4000K ON-OFF White 15166lm
4 254,32 €
Hind kehtib kuni 31.12.25
EAN: 8445386776521
MPN: CD5P-00X9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Hortizontal Recessed LED 258W LED neutral-white 4000K ON-OFF Gold 15166lm
4 371,13 €
Hind kehtib kuni 31.12.25
EAN: 8445386776545
MPN: CD5P-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Inward 2 Rings ø2000 Hortizontal Recessed LED 258W LED neutral-white 4000K ON-OFF Black 15166lm
4 223,18 €
Hind kehtib kuni 31.12.25
EAN: 8445386776538
MPN: CD5P-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Outward ø600 Surface LED 39W LED neutral-white 4000K ON-OFF Black 3674lm
1 076,29 €
Hind kehtib kuni 31.12.25
EAN: 8445386776644
MPN: CF4A-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Outward ø2000 Surface LED 129W LED warm-white 2700K ON-OFF White 8964lm
3 223,30 €
Hind kehtib kuni 31.12.25
EAN: 8445386776835
MPN: CF4C-00V9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Outward ø2000 Surface LED 129W LED warm-white 2700K ON-OFF Black 8964lm
3 220,31 €
Hind kehtib kuni 31.12.25
EAN: 8445386776828
MPN: CF4C-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Vertical Side ø900 Recessed LED 53W LED warm-white 3000K ON-OFF Black 2770lm
1 359,99 €
Hind kehtib kuni 31.12.25
EAN: 8445386779850
MPN: CP5K-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Vertical Side ø900 Recessed LED 53W LED neutral-white 4000K ON-OFF Gold 2992lm
1 418,62 €
Hind kehtib kuni 31.12.25
EAN: 8445386779904
MPN: CP5K-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Vertical Side ø900 Recessed LED 53W LED neutral-white 4000K ON-OFF White 2992lm
1 363,85 €
Hind kehtib kuni 31.12.25
EAN: 8445386779881
MPN: CP5K-00X9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø600 Surface LED 33W LED warm-white 2700K ON-OFF White 2133lm
1 080,81 €
Hind kehtib kuni 31.12.25
EAN: 8445386779959
MPN: CS4A-00V9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø600 Surface LED 33W LED neutral-white 4000K ON-OFF Black 2503lm
1 075,87 €
Hind kehtib kuni 31.12.25
EAN: 8445386780009
MPN: CS4A-00X9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø1200 Surface LED 60W LED warm-white 2700K ON-OFF Black 4261lm
1 661,79 €
Hind kehtib kuni 31.12.25
EAN: 8445386780078
MPN: CS4B-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø600 Surface LED 33W LED neutral-white 4000K ON-OFF Gold 2503lm
1 166,11 €
Hind kehtib kuni 31.12.25
EAN: 8445386780023
MPN: CS4A-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø1200 Surface LED 60W LED warm-white 3000K ON-OFF Gold 4632lm
1 770,50 €
Hind kehtib kuni 31.12.25
EAN: 8445386780115
MPN: CS4B-00W9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø2000 Surface LED 108W LED warm-white 2700K ON-OFF Gold 7458lm
3 335,62 €
Hind kehtib kuni 31.12.25
EAN: 8445386780191
MPN: CS4C-00V9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø2000 Surface LED 108W LED warm-white 2700K ON-OFF Black 7458lm
3 220,31 €
Hind kehtib kuni 31.12.25
EAN: 8445386780184
MPN: CS4C-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø2000 Surface LED 108W LED warm-white 3000K ON-OFF Black 8107lm
3 220,31 €
Hind kehtib kuni 31.12.25
EAN: 8445386780214
MPN: CS4C-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø2000 Surface LED 108W LED neutral-white 4000K ON-OFF Gold 8756lm
3 335,62 €
Hind kehtib kuni 31.12.25
EAN: 8445386780269
MPN: CS4C-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø3000 Surface LED 174W LED warm-white 2700K ON-OFF White 11012lm
4 624,47 €
Hind kehtib kuni 31.12.25
EAN: 8445386780306
MPN: CS4D-00V9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø3000 ø2000 ø1200) LED 320W LED warm-white 2700K ON-OFF Black 22731lm
9 390,63 €
Hind kehtib kuni 31.12.25
EAN: 8445386780429
MPN: CS4G-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø3000 ø2000 ø1200) LED 320W LED warm-white 3000K ON-OFF Gold 24709lm
10 571,97 €
Hind kehtib kuni 31.12.25
EAN: 8445386780474
MPN: CS4G-00W9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø3000 ø2000 ø1200) LED 320W LED warm-white 2700K ON-OFF Gold 22731lm
10 571,97 €
Hind kehtib kuni 31.12.25
EAN: 8445386780436
MPN: CS4G-00V9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø3000 ø2000 ø1200) LED 320W LED warm-white 3000K ON-OFF White 24709lm
9 396,48 €
Hind kehtib kuni 31.12.25
EAN: 8445386780467
MPN: CS4G-00W9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø2000 ø1200 ø600) LED 190W LED warm-white 2700K ON-OFF Black 13923lm
6 142,05 €
Hind kehtib kuni 31.12.25
EAN: 8445386780542
MPN: CS4H-00V9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø2000 ø1200 ø600) LED 190W LED warm-white 2700K ON-OFF White 13923lm
6 145,91 €
Hind kehtib kuni 31.12.25
EAN: 8445386780559
MPN: CS4H-00V9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø2000 ø1200 ø600) LED 190W LED warm-white 3000K ON-OFF Black 15058lm
6 142,05 €
Hind kehtib kuni 31.12.25
EAN: 8445386780573
MPN: CS4H-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø2000 ø1200 ø600) LED 190W LED warm-white 3000K ON-OFF White 15058lm
6 145,91 €
Hind kehtib kuni 31.12.25
EAN: 8445386780580
MPN: CS4H-00W9AZOS14
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward 3 Rings (ø2000 ø1200 ø600) LED 190W LED neutral-white 4000K ON-OFF Gold 16263lm
7 038,03 €
Hind kehtib kuni 31.12.25
EAN: 8445386780627
MPN: CS4H-00X9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø900 Surface LED 46W LED warm-white 3000K ON-OFF Black 2507lm
1 365,26 €
Hind kehtib kuni 31.12.25
EAN: 8445386780696
MPN: CS4K-00W9AZOS05
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks
LEDS-C4
In stock: No
LEDS-C4
Pendant Circular Downward ø900 Surface LED 46W LED warm-white 2700K ON-OFF Gold 2306lm
1 580,61 €
Hind kehtib kuni 31.12.25
EAN: 8445386780689
MPN: CS4K-00V9AZOSEF
Pakend: 1
Hinnanguline tarneaeg meie laos (umbes): 2-4 weeks