Extend your growing space with the Palram Snap & Grow 8 x 4 ft. Extension Kit. Crafted from the same, 100% UV-protected, virtually unbreakable SnapGlas panels. Designed to attach easily to your existing greenhouse, you can expand your space without the cost of a whole new greenhouse. * Extends your Snap & Grow Greenhouse * Crystal-clear SnapGlas panels are virtually unbreakable * Panels lock into place easily * Simple to add onto your existing greenhouse * Available in your choice of color * Measures 48L x 103W inches