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The 150 mm Y Union is a metal branch designed to divide or unify ventilation routes in Indoor cultivation. With three Ø150 mm outlets and a 45° bifurcation, it allows balanced airflow distribution in tents and rooms with multiple air destinations.

Made of galvanized sheet metal, the Y-Union 150 mm. offers rigidity, tightness, and durability in extraction and intake networks. The 150/150/150 geometry maintains section continuity to reduce pressure loss and aerodynamic noise compared to improvised joints.
Fits flexible ducts such as Sonoconnect, Aluconnect, and Combiconnect, as well as carbon filters, silencers, and 150 mm range extractors, creating clean and organized branches.
The Y angle (≈45°) smooths the change of direction, helps maintain airflow, and reduces turbulence.
In installations with several branches, it is advisable to balance the flow using reducers or flow regulators to maintain negative pressure and even distribution, which is key when the system includes a carbon filter and an outlet to the outside.
Recommended assembly with 150 mm clamps and aluminum tape for tightness and odor control. Ideal solution for feeding two grow tents from one extraction box, diverting cold air from the air conditioner to two areas, or unifying returns in medium-sized rooms.
Available at Hydroponics Blanes, a benchmark as a Grow Shop in Spain and trusted Grow Shop, with technical advice, discreet shipping, and a wide catalog of cannabis growing accessories and cheap indoor grow tents.
In indoor growing projects with more than one tent or several rooms, the Y-Union 150 mm. enables a clean branching of ventilation. The two-way distribution helps eliminate heat pockets, improve gas exchange, and stabilize temperature and rH between adjacent spaces.
It is used to diversify air routes from a 150 mm main duct to two equivalent branches, or to merge two lines into one. It allows you to feed two rooms from the same extraction box, separate supply and return, divert flow to a drying room, or integrate auxiliary equipment while maintaining flow continuity and efficiency.
Among cannabis growing accessories, this piece stands out for its mechanical stability and quick assembly. The galvanized finish resists the typical ambient humidity of rooms and tents and allows disassembly for dust cleaning, joint inspection, and section replacement without drastic changes to the overall network design.
Recommended when expanding a room with a second tent, when there is only one external outlet for several areas, when distributing cold supply from the air conditioner between two spaces, or when the plan requires branching returns to even out temperature and reduce stagnant humidity in ceilings and corners.
1) Plan the layout with a main duct and two Ø150 mm branches; measure lengths and anticipate support points.
2) Place the Y at the intended intersection, orienting the 45° bifurcation toward the destinations to minimize tight bends.
3) Insert Sonoconnect/Aluconnect/Combiconnect ducts into each opening; secure with 150 mm clamps.
4) Seal joints with aluminum tape to ensure tightness and odor control.
5) If there are multiple branches, install reducers or regulators to balance flows and maintain negative pressure.
6) Support the network every 1–1.5 m with metal straps or ties, avoiding stress on the piece.
7) Check depression and total flow; adjust speeds on the controller or diameters with reducers until balance is achieved.
At Hydroponics Blanes you can purchase a Y-Union 150 mm. with expert support and fast delivery. Complete catalog of cheap indoor grow tents, ventilation, climate control, and cannabis growing accessories all in one Grow Shop in Spain.
To split lines and balance flows in 150 mm installations, the Y-Union 150 mm. provides firm and tight joints, improves thermal distribution, and facilitates future expansions. Practical solution for grow tents and grow rooms available online at Hydroponics Blanes with discreet shipping and specialized advice.