PuraFlame’s Klaus 33-inch insert solves a specific problem: it turns an unused, drafty fireplace into a functional focal point. The included trim kit is key, letting you fit this electric unit into most standard 33-inch masonry openings without a complex renovation. You get the ambiance of a fire and supplemental heat from a clean, plug-in design.

The flame effect operates independently from the 750/1500W heater. That means you can run the realistic, multi-intensity LED flames year-round without raising the room temperature. The optional crackling sound and detailed resin logs add to the effect, though the sound is a simple speaker feature, not a physical simulation. Heat output is sufficient to take the chill out of a mid-sized room, not replace your primary heating.

Installation is straightforward but requires two people due to the size and weight. The unit ships in two boxes, which may arrive separately. Once in place, the polished black metal finish and glass door create a convincing, low-maintenance fireplace experience that works instantly at the flip of a switch.