Multiple Size Options Available. No Interest Payment Plans. 20-year Warranty. Complimentary personalized home delivery for all TigerFlex models. The 8’x6′ Tiger™ Dual Windowless Flex Apex outdoor storage unit stands out for its distinctive design, providing you with the freedom to place the double doors according to your preferences, offering complete customization. Discover the 8’x6′ Tigerflex Shiplap Apex Windowless Double Door Shed.