G-Tools Bonanza 1m² XL Height Extension Set+56cm

The G-Tools Bonanza XL Height Extension Set gives your 1m² cabinet an extra 56cm, taking total internal height to 232cm. It suits growers who have underestimated plant vigour, switched to a high-clearance lamp, or added the G-Tools 3-in-1 irrigation system.

Vertical space runs out faster than most growers expect. A plant that looks manageable at week three of veg can fill the remaining headroom within days. Once foliage crowds the light - especially an HPS fixture generating significant heat - you risk bleaching, burning, or uneven canopy temperatures. Adding 56cm of height before that point gives you room to manage the situation properly.

The extension set is designed specifically for the Bonanza 1m² cabinet. It arrives with a complete set of new back panels. Air-inlet holes are pre-cut; you position the air-outlet and cable-entry holes yourself in the extension back panels, keeping placement flexible for your specific ducting run. No cutting into the original cabinet body is required.

Installation is straightforward at any grow stage. Remove the cabinet roof, connect the new back panel to the existing structure, then stack and secure the new upper side panels before replacing the roof. The process does not require emptying the tent or disturbing root zones. Pair the extended cabinet with a Sanlight EVO or Q-series LED panel - both maintain low surface temperatures, making tighter canopy-to-lamp distances safer than HPS.

Growers running the G-Tools 3-in-1 irrigation system should consider this extension from the outset. The irrigation hardware sits above pot level and reduces usable canopy height by a meaningful amount. Starting with the XL configuration avoids a mid-grow retrofit and keeps headroom comfortable throughout the cycle.

Grower’s Note: When you gain significant vertical space, recalibrate your climate control. A taller air column needs slightly more extraction capacity to maintain even temperature and humidity from canopy to floor. Check that your current fan and carbon filter combination can handle the increased volume before filling that extra 56cm with growth.

Priced at £379, with free UK delivery.