3' High x 4' Wide with 90 Degree Lift

Mount supports on the frame itself as close to the back wall as possible. Then mount your supports on the lid as close to the position that you prefer the lid to open to however the closer to the center the better. When determining your length you should try to get it as close to the center of the lid as possible. Below the center you need to add pressure, after the center you begin to lower pressure. Always work with eye protection and mount using carriage bolts.
 
 

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Lid Weight Suggested Supports (Click Below for individual Specs)
21 Lbs. SE215P45S10
33 Lbs 6501S10
43 Lbs SE225P100S10
55 Lbs 4879S10
63 Lbs 4370S10
75 Lbs 4555S10
Mounting Hardware 10MM Brackets

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The Brackets used in the above application are: 

 10MM - 2 HOLE MOUNT L BRACKET

10MM - 5 HOLE FLAT BRACKET