Extend your Shelter Heavy-Duty Medium Log Rack (SERM) to 8-ft, 12-ft, or 16-ft lengths with this 4-ft Extension Kit! Multiple extension kits can be used to add 4-ft increments of protection for your firewood from dampness, rot, termites, and insects. The Shelter Heavy-Duty Medium Log Rack Extension Kit allows you to grow your fuel storage as needed, keeping your firewood off the ground and well-ventilated for year-round seasoning. Each Extension Kit measures 48" in length and holds 1/5 face cord of firewood. Manufactured with heavy-duty 1-1/4” square tubular steel, this log rack is finished with a durable weatherproof black powder-coat finish that resists chipping and corrosion. Made in the USA and backed by our Satisfaction Guaranteed / 1-Year Limited Warranty. Assembly Required.