Please Note: the light duty model has been discontinued. We are completley sold out of the Right Hand model but still have some of the left hand model (SKU 306130) in stock. They will be removed from our website once completely sold out. Flap support for upward opening cabinet doors and box lids. Images show this product in the box lid orientation. For upward opening cabinet doors, the product would be rotated 90 degrees clockwise for the right handed support and 90 degrees counter-clockwise for the left handed support. Both weight rating models measure the same size, the difference is in the size of the spring. In the closed position, the support measures 5.5" long, 1-3/8" tall and 1-3/8" wide. Weight ratings per lid using one right hand and one left hand support: This product is not recommended for use on toy boxes as there may be a danger to small fingers. Note: Normal installation requires one "Left Hand" model and one "Right Hand" model. Make sure to order one of each in the same size (Light Weight or Medium Weight). Do not mix different weight models on the same flap.