Keep your greenhouse safe from strong winds with this easy-to-install complete kit. Attach tie-down anchors to each steel corner post of your greenhouse frame. Disconnects easily so you can move your greenhouse, taking advantage of the best light year around. Each anchor measures 14" long. Wire and connector brackets included. GS-690

These high quality ABS polymer air vents allow fresh air to continually flow through your greenhouse. Place one vent at each corner for natural ground-up' cross ventilation. Close during colder weather. Outside dimensions of vent is 5-1/2" wide by 11-1/2" long. Inside dimension for rough opening is 3-3/4" wide by 9 1/2" long. Louvers can be removed to place a screen (screen not included). Polypipe support included to help frame and mount. GS-700