Nine Pendant in Brass With Voronoi II: Stairwell Sizing Guide

By Tala | Shop Official Tala® Lighting | Light to Live By – Tala US | Published: 2026-11-04

Category: How-to Guides

Plan a nine pendant brass Voronoi II cluster for a stairwell: measure the void, set the hanging height, space the pendants, and install with fewer surprises.

Quick answer

Hang the Nine Pendant in Brass + Voronoi II so the lowest bulb clears the stair treads by at least 2.1 m (7 ft) on the walking line, then center the nine-pendant canopy over the stair void rather than over the landing. Space pendants evenly within the canopy footprint and treat the whole assembly as one visual cluster, not nine separate lights.

Why stairwells punish guesswork more than flat ceilings

A stairwell combines a high mounting point with a sloped walking line, so a hanging height that looks generous from the landing can crowd the lower treads. The Nine Pendant’s large ceiling canopy fixes the cluster footprint, which means the decision you are really making is where that footprint sits in plan, not how to spread pendants across the whole void.

Because the fixture is supplied as an all-in-one cluster, you cannot independently raise one pendant to dodge a low beam or a window reveal. Measure the clearances first and choose the canopy position that keeps every bulb inside the safe zone.

When the standard clearance rule needs adjusting

The 2.1 m clearance is a minimum for the walking line, not a target for the visual center. On a tall stairwell you may want the cluster lower to read as a single object from the ground floor, but lowering it reduces headroom on the upper treads. Check both the bottom and top of the flight before committing.

If the stair turns or has a window on the void wall, keep the cluster centered on the widest open section of the void. Pushing it toward a wall can make the brass canopy look off-center from the main viewing angle, and it may put bulbs closer to the stair edge than the plan suggests.

Stairwell sizing and installation steps

Measure the stair void in plan: Record the void length and width at ceiling level, then mark the walking line down the center of the treads. Choose a canopy center point that sits over the widest open part of the void, not over the landing or a narrow return. Checkpoint: if the canopy center is within about 30 cm of a void edge, recheck the view from below before drilling.
Set the lowest bulb clearance: Use a laser or plumb line to project the lowest bulb position onto the stair treads. Confirm at least 2.1 m (7 ft) of clearance above the walking line at both the bottom and top of the flight. Common mistake: measuring only from the landing, where the floor is higher and the clearance looks larger than it is over the lower treads.
Decide the cluster height as one number: Because the pendants are pre-assembled into one canopy, set a single hanging height for the group. Pick the height that keeps the lowest bulb above the clearance line while keeping the cluster visually connected to the stair opening. Checkpoint: view the proposed height from the bottom step and from the upper floor; if it reads as two separate rows, adjust before final fixing.
Confirm multi pendant spacing within the canopy: Check that the nine pendants are evenly distributed within the supplied canopy footprint and that no pendant sits closer to a stair edge or wall than the others. The fixture’s fixed layout means spacing is set by the canopy, so your job is to verify it is level and square to the void. Common mistake: rotating the canopy to follow the stair slope, which makes the pendant rows look diagonal from the main viewing angle.
Plan the brass cluster pendant installation sequence: Install the ceiling fixing and canopy first, then check the canopy is level before hanging the pendant assembly. Use the supplied fixings for the ceiling structure and have a second person support the cluster while the canopy is secured. Checkpoint: confirm the ceiling fixing is rated for the fixture’s weight before lifting the cluster; if the ceiling structure is uncertain, stop and get advice.
Do a final clearance and sightline check: Walk the full flight and look up at several points. Confirm no bulb is within reach of the handrail, that the cluster is centered in the void from the main approach, and that the lowest bulb still clears the walking line. If any check fails, adjust the canopy position or height before the final electrical connection.

Product facts that affect stairwell sizing

Nine Pendant in Brass + Voronoi II - RT: The Nine Pendant in Brass + Voronoi II is an all-in-one fixture combining nine signature pendants and nine Voronoi II bulbs in a large ceiling canopy. The canopy sets a fixed cluster footprint, so you position the group as one unit rather than spacing nine separate pendants across the stairwell.
Nine Pendant in Brass + Voronoi II - RT