Vulkan Adjustable ceiling diffuser for stretch ceilings.
Round steel diffuser in three sizes — Vulkan 100, 125 and 160 — for PVC and fabric stretch ceilings and for plasterboard. Turn the damper to set the air volume; the 45° bowl sends the air along the ceiling. From 30.25 € including VAT.
- Steel + polymer coating
- 0–100% adjustable airflow
- Sealed against draughts
- EU-wide shipping
How Vulkan works.
Three things an installer does with it: set the air volume, seat it in the plenum, and take the cover off when the duct needs reaching.
Adjustable damper
Sealing contour
Magnets in the ring
Set the flow by hand
Turn the damper and the gap changes with it, so the room gets the air volume it needs. Done by hand from the room side, while the system is being balanced.
Seat it in the plenum
The rubber contour grips the inside of the plenum-box spigot, so the diffuser sits tight in the pipe — no leakage around the joint, and no draught finding its way back through it.
Magnets hold the cover
The cover is held on by magnets — pull it off by hand. Lift out the damper as well and the duct is clear, so the plenum box and ductwork can be cleaned with nothing unscrewed from the ceiling.
The 45° bowl is what spreads the air
Vulkan's bowl is formed at 45°, and that angle is the whole point of the shape. Supply air leaving the diffuser curls, attaches itself to the ceiling and runs along it before easing out into the room — the Coandă effect. The room fills evenly instead of taking a column of air straight down onto whoever is standing underneath.
Scroll to put it together.
Body, clamping ring, adjustable damper, cover. Nothing else — and every one of them comes back out by hand when the duct needs reaching.
Technical drawings
Real dimensions, not marketing renders — the numbers installers actually need.
- Outer flangeØ230 mm
- ConnectionØ125 mm
- Damper3-blade, open → closed
- SealContinuous rubber contour
Why fitters keep specifying it.
Vulkan is chosen for what it does on site: it moves air the way it should, it goes in fast, and it is made of steel in every size the market actually asks for.
Vulkan · Ø100 / Ø125 / Ø160
What you actually get.
Even air distribution
The 45° bowl sends supply air along the ceiling, so it reaches the whole room instead of dropping straight down.
Fast to install
No heating the PVC film to work creases out around the fitting — the ceiling goes on and the diffuser sits flat.
Steel, in every size
Pressed steel with a polymer powder coating, in the three connection diameters the market asks for: Ø100, Ø125, Ø160.
Made in Lentvaris
Designed and shipped from our own workshop in Lentvaris, Lithuania — order one piece or a pallet.
One diffuser, three sizes.
Vulkan 100 — 30.25 €, Vulkan 125 — 32.67 €, Vulkan 160 — 35.09 € including VAT (25 / 27 / 29 € excluding VAT). Click the photo and choose the size that matches your duct; dealer pricing on request.
- Shipped across the EULithuania, Poland, Latvia, Estonia, Romania, Czechia
- VAT invoiceFor companies and private buyers alike
- Made in LentvarisOur own production, not resold
- Linear in 5–7 daysRound: Ø100 / Ø125 / Ø160
Four parts, in the order they go together.
Every shot is the production sample, photographed as made.
The parts
Going together
Ceilings you don't notice.
Vulkan reads as a flush circle in the ceiling plane, so the ventilation stays out of the way of the interior.
In real ceilings.
Common questions
Match it to the duct or plenum spigot you already have: Vulkan 100 for a bathroom or WC extract, Vulkan 125 for most rooms, Vulkan 160 where the air volume is higher. Send us the duct size on WhatsApp and we'll confirm it.
PVC stretch ceilings, fabric stretch ceilings, and plasterboard. On a stretch ceiling the clamping ring draws the membrane in and grips it, so the ceiling finishes level with the cover — and the film needs no heating to work creases out around the fitting, which is where most of the fitting time normally goes.
A pressed steel body with a polymer powder coating, a rubber contour that seals it into the plenum spigot, a three-blade adjustable damper, and magnets that hold the cover on. Every size is built the same way.
