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90-Degree Aluminum Corner – Mill Finish


Depending on your project, it is highly recommended to order extra 90° corners. Because aluminum corners are stocked in 8′ lengths, small quantities shipped via UPS can be expensive.  

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For pricing or color availability, contact us today either by phone at 765-560-3872 (DURA) or send an email to info@duralightplastics.com. We’d love to discuss your next project!

Learn more about this product


The aluminum 90-degree corner is used to cover the ‘exposed side’ of the multiwall polycarbonate sheet on the vertical edges of roofs and at wall corners. (Other flashing materials may also be used.)

“Formerly known as the Sundance Supply Base & Cap System.”


Additional information

Weight2.34 lbs
Dimensions96 × 1.0 × 1.0 in


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Product Type

Aluminum Channels

Product Details

  • Material: Aluminum
  • Alloy: 6063 T5
  • Finish: Mill
  • Length: 8’
  • Sheet Size: N/A
  • Warranty: No


Sold Separately: Aluminum Base & Cap Profile and 8’ U-Profile

Install Tips

Tips for installing the aluminum 90-degree corner:
  • Make sure to pre-drill corner trim before attaching to structure with screws.
  • Before attaching corner to sheet, remove a few inches of protective film from sheet edge.
  • When attaching corner to sheet w/screws, start at one end and work towards opposite end.
  • Attaching corner trim at both ends of the sheet first may cause ‘bowing’ and/or ‘oil canning as the remainder of the corner trim is attached to the sheet.


Technical Information

A complete list of install components can be found by clicking on ‘All Products’ in the main menu and selecting ‘Install Accessories’. For additional product and technical information, please visit our ‘Resource Hub’.

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