Fernwood Tree Fern Panels, Twin Pack for Vivarium, Terrarium, Drip Walls, Pets and Substrate Large, 17.5" x 8" x .5", Twin Pack. A must-have for any terrarium, vivarium, or 'green walls.' Fernwood panels are thin (versatile at .5 inch and perfect for doubling up), soft, durable, fibrous and help create a balanced environment. Supports growth of epiphytes, climbing plants, vines and mosses. Epiphytic plants grow well when panel is used as a drip wall. Perfect for orchids Excellent for use in tropical and sub-tropical terrariums. The panels hold moisture very well, which in turn will help regulate humidity. Made from the New Zealand Xaxim tree fern a 100% natural and sustainably grown giant fern. Fernwood tree fern products are made from a tree fern that is not CITES listed. All South American tree fern products are made from tree fern species that are CITES listed and endangered. Panels are non-toxic, have natural antibacterial properties that prevent disease, keeping plants and pets healthy. 17.5&#034; x 8&#034;, Twin Pack. A must-have for any terrarium, vivarium, or and &#039;green walls&#039;. Fernwood panels are soft, durable, fibrous and help create a balanced environment. Supports growth of epiphytes, climbing plants, vines and mosses. Epiphytic plants grow well when panel is used as a drip wall. Perfect for orchids Excellent for use in tropical and sub-tropical terrariums. The panels hold moisture very well, which in turn will help regulate humidity. Made from the New Zealand Xaxim tree fern a 100% natural and sustainably grown giant fern. NZ tree fern panels are superior and different to those from Central America. They are soft, not hard, and superior for plant growth. Panels are non-toxic, have natural antibacterial properties that prevent disease, keeping plants and pets healthy. Remarkable long period moisture and humidity maintaining ability, sometimes enabling ferns and mosses to appear spontaneously. When used properly Fernwood panels are long-lasting and resist deteriorating during continuous exposure to moisture or wetness. Panels are light in weight when dried and can be easily cut according to custom requirements. These fern panels are strong, fibrous, and depicts natural dark wood color when wet. Panels are non-toxic, have natural antibacterial properties that prevent disease, and keep plants healthy. Epiphytic plants like orchids can be easily mounted on the panels as they are the perfect substrate for plant roots to easily grow onto and into. Natural capillary action works very well in drip wall system, enabling water to flow down through the panels steadily preventing water log. These fern panels have high resistance to mold or mildew.