https://elementa.dk/ daily https://elementa.dk/products/smartfan-pro-bt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/SmartFanProHero_stor.png?v=1706691374 Getair SmartFan Pro BT 1-rums varmegenvinding https://elementa.dk/products/sildesign 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/SilDesignudenbaggrund.png?v=1701169032 Blauberg SileoDesign V2 100 H badventilator, udsugning https://elementa.dk/products/plastror-o160-l500 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31030400_Montagerohr500-16_v1_Vorderansicht_transparent_stor.png?v=1706107702 Plastrør Ø160 L500 https://elementa.dk/products/plastror-o160-l700 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31030401_Montagerohr700-16_v1_Vorderansicht_transparent_stor.png?v=1706107772 Plastrør Ø160 L700 https://elementa.dk/products/plastror-o160-l1000 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31030402_Montagerohr1000-16_v1_Vorderansicht_transparent_stor.png?v=1706107673 Plastrør Ø160 L1000 https://elementa.dk/products/smartcover-pro-bt-indvendigt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31060060_InnenblendemitElektronik_v1_Vorderansicht_transparent_stor.png?v=1706108970 SmartCover Pro BT indvendigt https://elementa.dk/products/smartfan-pro-bt-unit 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31043011_FunktionseinheitDeepstageFunk_v1_Vorderansicht_transparent_stor.png?v=1706530545 SmartFan Pro BT unit https://elementa.dk/products/smarthood-plug-adapter 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31021050_smartCoverPlusSteckadapter160_v1_Vorderansicht_transparent_stor.png?v=1706108815 SmartHood plug adapter https://elementa.dk/products/finedust-filter-2-stk 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31051240_Feinstaubfilter_v1_Vorderansicht_stor.png?v=1706107034 FineDust filter (2 stk) https://elementa.dk/products/smartfan-3k-lyddaemper 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31050230_Schalldammelement3K_v1_Vorderansicht_transparent_stor.png?v=1706108534 SmartFan 3K lyddæmper https://elementa.dk/products/smartfan-kort-lyddaemper 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31051000_Schalldammsetkurz_v1_Vorderansicht_transparent_stor.png?v=1706108604 SmartFan kort lyddæmper https://elementa.dk/products/smartfan-sensor 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31073000_Drucksensor_v1_Vorderansicht_transparent_stor.png?v=1706108716 SmartFan sensor https://elementa.dk/products/comfortcontrol-pro-bt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31076000_ComfortControlPro_v1_Vorderansicht_transparent_stor.png?v=1706107402 ComfortControl Pro BT https://elementa.dk/products/ecocontrol-pro-bt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31075000_BasicControl_v1_Vorderansicht_transparent_stor.png?v=1706107442 EcoControl Pro BT https://elementa.dk/products/powersupply-5v 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31073410_NetzteilUnterputz12V_v1_Vorderansicht_transparent_stor.png?v=1706108666 PowerSupply 5v https://elementa.dk/products/smarthood-udvendigt-cover-hvid 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31021010_smartCoverPlusweiss_v1_Vorderansicht_transparent_stor.png?v=1706108210 SmartHood udvendigt cover hvid https://elementa.dk/products/smarthood-udvendigt-cover-sort 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31021011_smartCoverPlusanthrazit_v1_Vorderansicht_transparent_stor.png?v=1706108413 SmartHood udvendigt cover sort https://elementa.dk/products/metalcover-udvendigt-rustfrit-stal 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31020501_AussenhaubeMetalCoverEdelstahl_v1_Vorderansicht_transparent_stor.png?v=1706100111 MetalCover udvendigt grå https://elementa.dk/products/mountingblock-isoleret-vaeggennemforring 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31080200_Neubau-Montagestein500Montagerohr500-16_v1_Vorderansicht_transparent_stor.png?v=1706527405 MountingBlock isoleret væggennemførring https://elementa.dk/products/metalcover-udvendigt-hvid 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31020502_AussenhaubeMetalCoverWeiss_v1_Vorderansicht_transparent_stor.png?v=1706527733 MetalCover udvendigt hvid https://elementa.dk/products/metalcover-udvendigt-sort 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31020503_AussenhaubeMetalCoverAnthrazit_v1_Vorderansicht_transparent_stor.png?v=1706527818 MetalCover udvendigt sort https://elementa.dk/products/silentair-vindueslosning 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31031100_LaibungsilentAir_v1_Vorderansicht_transparent_stor.png?v=1706528039 SilentAir vinduesløsning https://elementa.dk/products/silentair-lydisolering-vindueslosning 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31050550_LaibungsilentAirSchalldamm-Matte_v1_Vorderansicht_transparent_stor.png?v=1706528122 SilentAir lydisolering vinduesløsning https://elementa.dk/products/silentair-facade-element 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31031300_silentAirTop_v1_Vorderansicht_transparent_stor.png?v=1706528189 SilentAir Top facade element https://elementa.dk/products/silentair-top-lydisolering 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31050600_silentAirTopSchalldamm-Matte_v1_Vorderansicht_transparent_stor.png?v=1706528284 SilentAir Top lydisolering https://elementa.dk/products/silentair-top-udvidelse 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31031310_silentAirTopVerlangerung_v1_Vorderansicht_transparent_stor.png?v=1706528446 SilentAir Top udvidelse https://elementa.dk/products/silentair-front-facade-element 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31031400_SoundGuard_v1_Vorderansicht_transparent_stor.png?v=1706528530 SilentAir Front facade element https://elementa.dk/products/silentair-m-stalrist-hvid 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31021220_LaibungsilentAirGitterMWeiss_v1_Vorderansicht_transparent_stor.png?v=1706529190 SilentAir M stålrist hvid https://elementa.dk/products/silentair-m-stalrist-anthracite 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31021221_LaibungsilentAirGitterMAnthrazit_v1_Vorderansicht_transparent_stor.png?v=1706529330 SilentAir M stålrist sort https://elementa.dk/products/silentair-asa-plastrist-hvid 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31021310_LaibungsilentAirGitterASAWeiss_v1_Vorderansicht_transparent_stor.png?v=1706529469 SilentAir ASA plastrist hvid https://elementa.dk/products/silentair-asa-plastrist-anthracite 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31021311_LaibungsilentAirGitterASAAnthrazit_v1_Vorderansicht_transparent_stor.png?v=1706529520 SilentAir ASA plastrist sort https://elementa.dk/products/smartfan-pro 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/SmartFanProHero_stor_1c020468-0ac9-464b-9d69-d831b282c1c2.png?v=1706530406 Getair SmartFan Pro 1-rums varmegenvinding https://elementa.dk/products/smartfan-pro-unit 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31043010_FunktionseinheitDeepstageKabel_v1_Vorderansicht_transparent_stor.png?v=1706530604 SmartFan Pro unit https://elementa.dk/products/smartcover-pro-indvendigt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31060060_InnenblendemitElektronik_v1_Vorderansicht_transparent_stor_cf5bf14f-7025-4e00-8375-4a9c84c87328.png?v=1706530824 SmartCover Pro indvendigt https://elementa.dk/products/glascover-pro-indvendigt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31060050_InnenblendeGlasCover_v1_Vorderansicht_transparent_stor.png?v=1706530919 GlasCover Pro indvendigt https://elementa.dk/products/basiccontrol-pro 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31075000_BasicControl_v1_Vorderansicht_transparent_stor_7bab99d9-ab4e-4336-9b3c-325b8c6a2f34.png?v=1706531844 BasicControl Pro https://elementa.dk/products/powersupply-12v-36-w 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31073410_NetzteilUnterputz12V_v2_Vorderansicht_transparent_stor.png?v=1706531982 PowerSupply 12V / 36 W https://elementa.dk/products/vento-expert-a50-1-w 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/vento_expert_a50_1_w_v3_800x8002_72be905d-5622-44e7-97a0-10a3c87ad688.png?v=1711377220 Blauberg VentoExpert A50 1-rums varmegenvinding https://elementa.dk/products/onelife-x 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/BaggrundenforOneLife_X_Front_Darkblevfjernet.png?v=1706604953 OneLife X luftrenser https://elementa.dk/products/airfan-1 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Skaermbillede2024-04-01kl.14.13.26.png?v=1711973641 ColoAir vådrum https://elementa.dk/products/specialcellar-kaelderlosning-pakke 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/BaggrundenforSkaermbillede2024-01-31kl.13.36blevfjernet.47.png?v=1706704797 SpecialCellar kælderløsning https://elementa.dk/products/specialroof-taglosning-pakke 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/BaggrundenforSkaermbillede2024-01-31kl.13.43blevfjernet.44.png?v=1706705124 SpecialRoof tagløsning https://elementa.dk/products/sileo 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/sileo800x8004.png?v=1706782839 Blauberg Sileo V2 100 H badventilator, udsugning https://elementa.dk/products/getair-smartfan-x9 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31094700.png?v=1732535548 Getair SmartFan X9 badventilator, udsugning https://elementa.dk/products/ventoexpert-a100-1-s10-w-v-2 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/vento_expert_a100_1_s10_w_v2_800v2.png?v=1706795267 Blauberg VentoExpert A100 1-rums varmegenvinding https://elementa.dk/products/ventoexpert-a30 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/vento_expert_duo_a30_1_s10_w_v2_8002.png?v=1706796556 Blauberg VentoExpert A30 DUO 1-rums varmegenvinding https://elementa.dk/products/dustfilter-170-4-stk 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31051350_Staubfilter170_G3__v1_Default_Vorderansicht_stor.png?v=1708505359 DustFilter 170 (4 stk.) https://elementa.dk/products/mountingblock-isoleret-vaeggennemforring-v2 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31080202_Neubau-Montagestein500V2_v1_Vorderansicht_transparent_stor.png?v=1708512523 MountingBlock isoleret væggennemførring v2 https://elementa.dk/products/flushbox 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31076900_ElektronikUnterputzdose_v1_Vorderansicht_transparent_stor.png?v=1708512890 FlushBox https://elementa.dk/products/cavitybox 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31076910_ElektronikUnterputzdose_Hohlwand__v1_Vorderansicht_transparent_stor.png?v=1708512940 CavityBox tunnel connection https://elementa.dk/products/smartcover 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081610_InnenblendeAbdeckung_v1_Vorderansicht_transparent_stor.png?v=1708516301 SmartCover https://elementa.dk/products/electriccover-venstre 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081665_Elektroabdeckunglinks_v1_Vorderansicht_transparent_stor.png?v=1708516537 ElectricCover venstre https://elementa.dk/products/electriccover-hojre 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081675_Elektroabdeckungrechts_v1_Vorderansicht_transparent_stor.png?v=1708516588 ElectricCover højre https://elementa.dk/products/filterholder 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081680_Filterhalter_v1_Vorderansicht_transparent_stor.png?v=1708516687 FilterHolder https://elementa.dk/products/mainboard-pro-bt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081650_Lufter-Hauptplatine_v1_Vorderansicht_transparent_stor.png?v=1708517637 MainBoard Pro BT https://elementa.dk/products/tubesensor-tryksensor 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31083000_ErsatzrohrDrucksensor_v1_Vorderansicht_transparent_stor.png?v=1708518250 TubeSensor tryksensor https://elementa.dk/products/ceramicheat-varmeveksler 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081300_WarmetauscherkleineWabe_v1_Vorderansicht_transparent_stor.png?v=1708518124 CeramicHeat varmeveksler https://elementa.dk/products/smartvent-pro-bt-fan-unit 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081010_DeepstageVentilatoreinheitFunk_v1_Vorderansicht_transparent_stor.png?v=1712146786 SmartVent Pro BT fan unit https://elementa.dk/products/smartvent-pro-fan-unit 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31081011_DeepstageVentilatoreinheitKabel_v1_Vorderansicht_transparent_stor.png?v=1712146811 SmartVent Pro fan unit https://elementa.dk/products/powersupply-12-v-top-hat-rail 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/31073420_NetzteilHutschiene12V_v1_Vorderansicht_transparent_stor.png?v=1712147408 PowerSupply 12 V top-hat rail https://elementa.dk/products/sileo-dc-100-h 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/sileo800x8004_5e5ef459-4f64-49a8-8675-83851de6c5b0.png?v=1712148018 Blauberg Sileo DC 100 H badventilator, udsugning https://elementa.dk/products/sileodesign 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/sileodesignv28002.png?v=1712148083 Blauberg SileoDesign DC 100 H badventilator, udsugning https://elementa.dk/products/smart-100-125-ir 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/smart_image.png?v=1712309012 Blauberg Smart 100/125 IR badventilator, udsugning https://elementa.dk/products/smart-100-125-wifi-ir 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/smart_image_74440408-6035-49de-93c0-d02d3372532e.png?v=1712309157 Blauberg Smart 100/125 WIFI badventilator, udsugning https://elementa.dk/products/blauberg-blauplast-o100-l500-1500-mm-ventilationsror 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/rr_image.png?v=1712309875 Blauberg BlauPlast Ø100 L500/1500 mm ventilationsrør https://elementa.dk/products/decor-m 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/decor_m_image.png?v=1712839645 Blauberg Decor-M jalousisrist/ventilationsrist https://elementa.dk/products/vda 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/vda_cfn_al_800x8002_da99db6d-19cd-49c7-aa2a-0867233b3356.png?v=1712839532 Blauberg VDA jalousisrist/ventilationsrist https://elementa.dk/products/rorforlaenger 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/6_80c6f44d-9fe8-49da-b8cd-537b2ea9c9ce.png?v=1728298182 Rørforlænger til tykke vægge https://elementa.dk/products/airfan-luftkvalitetsmaaler 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/BaggrundenforSkaermbillede2024-07-02kl.11.22blevfjernet.42.png?v=1719912308 Coloair AirFan luftkvalitetsmåler https://elementa.dk/products/colokit-til-tynd-vaeg 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Kitforthethin-1.png?v=1728294197 Sæt til tynde vægge https://elementa.dk/products/ventilationsskakt 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Skaermbillede_2024-10-10_kl._14.03.14.png?v=1728561815 Ventilationsskakt til ventilation i kælder https://elementa.dk/products/airfan-varianter 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/white_750X750_-2.jpg?v=1726059658 Coloair AirFan 1-rums varmegenvinding https://elementa.dk/products/filtersaet-1-x-f7-pollenfilter-1-x-g3-stovfilter 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Filter_stor.png?v=1728294937 Filtersæt (1 x F7 pollenfilter + 1 x G3 støvfilter) https://elementa.dk/products/blauberg-vento-inhome-wifi-o160-1-rums-varmegenvinding 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Skaermbillede_2025-02-12_kl._15.12.08.png?v=1739369660 Blauberg Vento inHome WIFI Ø160 1-rums varmegenvinding https://elementa.dk/products/blauberg-blauplast-o100-mm-teleskopror 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Oe100teleskoproer.png?v=1739983214 Blauberg BlauPlast Ø100 L350-1000 mm teleskoprør https://elementa.dk/products/blauberg-blauplast-o125-teleskopror 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Teleskoproer_Oe125.png?v=1739982038 Blauberg BlauPlast Ø125 L350-1000 mm teleskoprør https://elementa.dk/products/ventilationsskakt-til-ventilation-i-kaelder 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Skaermbillede2025-02-11kl.14.04.35.png?v=1739280196 Ventilationsskakt til ventilation i kælder https://elementa.dk/products/ventilationsskakt-til-ventilation-i-kaelder-1 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Skaermbillede2025-02-12kl.11.25.51.png?v=1739355977 Ventilationsskakt til ventilation i kælder https://elementa.dk/products/blauberg-vento-inhome-o160-1-rums-varmegenvinding-1 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/Skaermbillede_2025-02-12_kl._15.12.08.png?v=1739369660 Blauberg Vento inHome Ø160 1-rums varmegenvinding https://elementa.dk/products/blauberg-blauplast-o125-l500-1500-mm-ventilationsror 2026-08-29T11:06:37+02:00 daily https://cdn.shopify.com/s/files/1/0793/1029/1282/files/rr_image.png?v=1712309875 Blauberg BlauPlast Ø125 L500/1500 mm ventilationsrør