Frequently Asked Questions

Do you provide 3D projects before ordering?

Yes — we frequently create basic 3D projects for bespoke and custom lighting configurations (without renderings) to help visualize the design. We regularly collaborate with interior designers, architects, and design studios on custom projects, providing this design support free of charge.

How do you ship fragile glass lighting?

All our lighting fixtures are carefully hand-packed using protective materials. We have extensive experience shipping fragile glass across the United States, and transit damage is very rare. If damage occurs, we will replace the affected parts immediately at no extra cost — no complicated claims process required.

Can I order replacement parts or additional units later?

Yes — you can order additional glass shades after delivery. Please contact us with your order number so we can ensure consistency with your original piece.

What light bulbs do you use?

We use vintage-style LED Edison bulbs or similar decorative LED bulbs with a warm light temperature of 2700K or lower. These bulbs provide a soft, warm ambiance and are available in different shapes and filament styles. We recommend using LED bulbs only, as they produce significantly less heat and are better suited for hand-blown glass.

Are the lamps dimmable?

Yes — our lamps are generally dimmable, but dimming depends on the bulb used. If you use dimmable LED bulbs together with a compatible wall dimmer switch, the fixture will be fully dimmable.

Are your lamps smart home compatible?

Yes — in most cases, our lamps are compatible with smart home systems. Compatibility depends on the bulb rather than the fixture itself. If you use smart dimmable bulbs (such as Philips Hue or similar), the fixture can be fully integrated into your smart home system.

What is the recommended installation height?

We recommend the following installation heights:

Over dining tables: 28–32 inches above the table surface
Over kitchen islands: 32–36 inches above the surface
Over staircases / voids: approximately 8 feet above floor level (depending on ceiling height and layout)

These are general guidelines and may be adjusted depending on your interior design concept.

Can I customize my order?

Yes — we specialize in custom-made lighting. We can customize:

Ceiling canopy size and shape
Number of light sources
Cord/cable lengths
Glass colors and compositions

We also regularly design long chandelier installations for staircases, double-height spaces, and elongated fixtures over dining tables or kitchen islands. If you have a specific idea or project, we will be happy to assist.

How long does production take?

Our products are made to order. The typical production time is up to 6 weeks from the moment the order is confirmed and payment is received. As each piece is handmade, slight variations in lead time may occur during busy production periods.

What type of sockets do you use?

For all US orders, we use standard E26 sockets and UL-listed components where required, including UL-listed WAGO connectors. We have completed numerous installations across North America.

What happens if my lamp arrives damaged?

If your lamp arrives damaged, please contact us immediately at hello@studio-tenke.com and provide photos of the damage and packaging. We will arrange a replacement as quickly as possible, without waiting for the carrier claim process to be completed.

How are the lamps shipped?

We ship throughout the United States via FedEx, UPS, or trusted freight courier services. All shipments are carefully packed to ensure maximum protection of the glass components.

What is the weight of the fixtures?

Because our products are handmade from blown glass, weight may vary slightly between pieces. As a general reference, a configuration with three glass pieces on a 12-inch ceiling plate weighs approximately 15–18 lbs. We strongly recommend ensuring that the ceiling structure and electrical junction box are structurally rated to support the weight of the fixture.

Are the lamps adjustable?

Yes — cable lengths are adjustable on-site using a standard strain relief system with a locking screw mechanism. If you require longer cables for higher ceilings or staircases, please let us know in advance and we will prepare them at no extra cost.

Installation requirements

All lighting fixtures must be installed by a licensed and insured professional electrician in accordance with the National Electrical Code (NEC) and local building regulations. It is the sole responsibility of the installer and property owner to ensure that the ceiling junction box, mounting hardware, and structural framing are adequately secured and capable of safely supporting the total weight of the fixture.

Additional note on glass craftsmanship

As each piece is hand-blown glass, slight variations in shape, size, and bubbles are natural and part of the material character. These are not considered defects, but rather a unique feature of handmade production.