Selection Of Sizes Offered. Zero Percent Financing. Warranty for 20 Years. Free selection of delivery day for our TigerFlex series. The 8’x6′ Tiger™ Flex Apex Windowless garden shed is a uniquely designed structure that gives you the freedom of choosing its placement, ensuring it fits your preferences perfectly. Opt for the 8’x4′ Tigerflex Shiplap Apex Windowless Shed and Select Your Preferred Delivery Day