GR10q 2D 4-Pin 16W 835 White Fluorescent Lamp – 3500K

The GR10q 2D 4-Pin 16W 835 Fluorescent Lamp is a compact square-shaped replacement lamp designed for compatible 2D fluorescent fittings using a GR10q 4-pin base.

Producing approximately 1050 lumens with a 3500K White (835) colour temperature, this 16W 2D lamp provides broad, even illumination from a compact, low-profile design.

The distinctive flat 2D shape makes it particularly suitable for compatible ceiling lights, wall fittings, bulkhead lights, corridors, stairwells, commercial lighting and emergency lighting applications where fitting depth is limited.

This lamp is an ideal replacement for existing 16W 835 GR10q 4-pin 2D fluorescent lamps, including compatible equivalent models from manufacturers such as Philips and other major lighting brands, provided the wattage, base, pin configuration and colour code match.

Key Features

• 16W 2D compact fluorescent lamp
• GR10q 4-pin base
• 835 White
• 3500K colour temperature
• Approximately 1050 lumens
• CRI approximately 80+
• Approx. 10,000-hour lamp life
• Compact flat / square 2D design
• Broad and uniform light distribution
• Designed for compatible electronic control gear
• Suitable for residential, commercial and emergency lighting applications
• Replacement for compatible Philips and other GR10q 16W/835 4-pin lamps

Technical Specifications

Compatible & Equivalent Lamp References

This 16W 835 GR10q 4-pin 2D fluorescent lamp may be used as a replacement for equivalent lamps where the original fitting requires the same 16W wattage, GR10q 4-pin base and compatible control gear.

Known equivalent/reference lamps include:

*Always verify the exact Sylvania lamp/base marking before ordering, as Sylvania produced both 2-pin GR8 and 4-pin GR10q 2D lamp variants.

Philips Cross-Reference

A particularly useful replacement reference for this lamp is:

Philips PL-Q 16W/835/4P – GR10q – 927939183540

If this reference, or PL-Q 16W/835/4P, appears on your existing lamp, this product has the same key lamp format: 16W, 835, GR10q and 4-pin.

Common Applications

The 16W GR10q 4-pin 2D fluorescent lamp is commonly used in compatible:

• Bulkhead lighting
• Ceiling fittings
• Wall-mounted fittings
• Hallways and corridors
• Stairwell lighting
• Emergency lighting
• Apartment common areas
• Commercial buildings
• Offices
• Retail environments
• Hospitality lighting
• Utility areas
• Enclosed exterior fittings

Its compact square shape provides broad illumination while allowing manufacturers to design relatively shallow ceiling and wall fittings.

How to Identify the Correct Replacement

Before ordering, check the information printed on your existing lamp.

For this product, look for:

16W + 835 + GR10q + 4-Pin

Your old lamp may also be marked:

16W/835/4P

or:

PL-Q 16W/835/4P

The 835 colour code indicates approximately 3500K White light.

You may also find a manufacturer product number such as the Philips reference listed above.

GR10q 4-Pin – Important

This product uses a GR10q 4-pin base.

Please physically check the base of your existing lamp before ordering.

A similar-looking GR8 2-pin 2D lamp is not interchangeable simply because it has the same 16W wattage or square shape.

The replacement should match:

✓ 16W
✓ GR10q
✓ 4-Pin
✓ 835 / 3500K if you want the same light colour

Do not select a 2D replacement based solely on its physical appearance.

What Does 835 Mean?

The 835 lamp code identifies the colour characteristics of the fluorescent lamp.

The first digit indicates a colour rendering range of approximately 80+, while 35 indicates a colour temperature of approximately 3500K.

Therefore:

835 = CRI 80+ / 3500K White

This provides a neutral-to-warm white appearance between traditional 3000K Warm White and 4000K Cool White.

3500K White Light

The 3500K White colour is suitable for applications where a balanced light appearance is preferred.

Common applications include:

• Corridors
• Offices
• Apartment common areas
• Commercial interiors
• Hallways
• Hospitality areas
• Utility spaces
• General-purpose ceiling lighting

If maintaining the same colour as your existing fitting is important, check that 835 or 3500K appears on your old lamp.

Need Help Finding the Correct 2D Lamp?

Not sure whether you need this 16W GR10q 4-pin lamp or a 16W GR8 2-pin version?

Send NZ Lights a clear photo of your existing lamp and the markings printed on the tube or base.

We can help identify the wattage, pin configuration, base and colour code required for your fitting.

Why Buy from NZ Lights?

NZ Lights specialises in replacement lamps and hard-to-find lighting products for residential, commercial and professional applications throughout New Zealand.

• Specialist replacement lighting range
• Hard-to-find fluorescent and CFL lamps
• 2-pin and 4-pin 2D lamps available
• Single and bulk quantities
• NZ-based support
• Fast nationwide delivery
• Daily dispatch from Christchurch, New Zealand