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The PRIME LINE PRODUCTS PL 14318 is a 20-pack of metal miter window corners designed for use with aluminum window frame systems. These corner pieces provide structural reinforcement at mitered frame joints, maintaining tight, square connections in window frame assemblies. At 3/8 inch in size, they are precision-fitted for compatible aluminum extrusion profiles. Glaziers, window installers, and general contractors typically install these components during window fabrication or field repair of aluminum-framed units. The metal construction delivers durability suited to both new installation and replacement service work.
These miter corners are intended for aluminum window frame applications where mitered corner joints require mechanical support. They are specified for use with PRIME LINE PRODUCTS aluminum window frame components and are sold in a 20-pack quantity, making them practical for multi-unit service calls or shop fabrication work. Compatible frame systems include those using part numbers PL14155, PL14156, and PL14157 aluminum window frame profiles.
Designed for use with PRIME LINE PRODUCTS aluminum window frame systems using part numbers PL14155, PL14156, and PL14157.
Installation is typically performed by glaziers or window frame technicians. Before servicing an existing frame, ensure the sash or frame assembly is fully supported and removed from the opening. Standard hand tools are sufficient for inserting and securing miter corners into aluminum extrusion channels. Follow applicable local building codes for window installation and replacement work.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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