Exaco Royal Victorian Lower Threshold Kit 

The Lower Threshold Kit 2025 is the latest upgrade for Janssens Royal Victorian greenhouses, lowering the entry point from the standard 4.5" foundation frame to just 1 1/4". This makes access safer and smoother, especially when moving wheelbarrows or carts.

Unlike the previous KSD Low Threshold Kit, which included a full 4-sided frame and a sliding door lock, the 2025 model is a simplified bottom-only threshold. It comes in one length, so if you have a single sliding door you’ll need to cut it to size, and if you have double sliding doors you’ll need to purchase two kits.

⚠️ Important: Installation requires cutting into the foundation frame.