The Gleam is the deeper, brighter answer to the same 90mm cut-out that the shallow polycarbonate downlights use. A polycarbonate face over an aluminium body, 100mm across and 60mm deep, recessed so that the source sits back from the ceiling plane rather than flush with it. This listing carries both finishes HV5528T-WHT and HV5528T-BLK at the same output and the same price.

What the recess depth actually does

Setting the LED back inside the housing is the whole point of the fitting. It cuts the angle at which the source is directly visible, so a room of them reads as pools of light rather than as a row of bright dots, and it is why the Gleam is specified in living rooms and hospitality where the shallow version would be glary. The trade is depth: at 60mm it needs more clearance above the ceiling than a 48mm fitting, and 70mm if the insulation cap is fitted.

Output and colour

A switch on the fitting selects 3000K, 4000K or 5500K, and Havit measures 680lm, 795lm and 745lm in that order. The peak is in the middle 4000K is the brightest of the three, and the coolest setting gives about 6% less light rather than more. Choose the colour for the room, not for output. The beam is 90, wide enough for even ceiling coverage without being a floodlight, and colour rendering is CRI>80. The face is fixed; there is no tilt.

Insulation the qualification that matters

The Gleam is IC-4 rated only when the HV5528-IC4CAP is fitted, and even then Havit is explicit that the rating covers the fitting only the driver may not be installed under insulation and must sit above it so it can ventilate. Havit also states that the fixture must not be installed with loose-fill insulation such as macerated paper or wool. Read that as three separate requirements rather than one, because the most common failure in this class of downlight is a driver quietly buried in batts.

Wiring, rating and warranty

It runs on 240V from a separate driver and is supplied with a flex and plug, so it lands on a plug base fixed in the ceiling quick to install and quick to swap. It is Protection Class 2, so no earth is required at the fitting. IP54 applies to the front of the fitting only: the visible face resists dust and splashing, the plenum side does not, so it suits a bathroom or laundry ceiling but not an exposed one. It is Triac dimmable, IK08, rated >30,000hrs, with a 3 year replacement warranty. Havit also offers a DALI-dimmable version of this fitting through its Commercial range if the project is on a control system. Lights For You lists the 8W shallow fitting on the same 90mm cut-out for ceilings without the depth for this one.

Questions

What cut-out does it need, and how deep?

90mm. The body is 100mm across and 60mm deep, rising to 70mm with the HV5528-IC4CAP insulation cap fitted, so check the clearance above the ceiling before ordering.

Which colour temperature is brightest?

4000K, at 795lm. 3000K gives 680lm and 5500K gives 745lm so the coolest setting is not the brightest, which catches people out on this fitting.

Can it be covered by insulation?

Only with the HV5528-IC4CAP fitted, and only the fitting itself. Havit is explicit that the driver cannot be installed under insulation and must sit above it to ventilate, and that loose-fill insulation such as macerated paper or wool must not be used with this fixture at all.

Does it need an earth?

No. It is Protection Class 2 and is supplied with a flex and plug that lands on a plug base in the ceiling.

Is it suitable for a bathroom?

The IP54 rating covers the front of the fitting only, so it suits a bathroom or laundry ceiling outside the immediate shower zone. It is not rated for an exposed outdoor ceiling.

Can it be dimmed?

Yes Havit lists it as Triac dimmable, using a compatible dimmer on the circuit. A DALI-dimmable version of the same fitting is offered through Havits Commercial range for projects on a control system.

Does the head tilt or adjust?

No. Havit lists tilt as none. The recess depth and the 90 beam do the work instead, which is what makes it a general-purpose ceiling light rather than an accent fitting.