Reinforced Insulated Sectional Garage Door 1.5mm Embedded Steel Plate for Heavy Daily Use Product Overview Our reinforced insulated sectional garage door uses pre-embedded 1.5 mm steel plates at panel connection and installation points, together with a controlled panel straightness tolerance of ± 0.5 mm, to provide reliable performance even under frequent opening and closing in residential garages and building projects. Key Features 1. 1.5 mm Embedded Steel Reinforcement Pre