Universal Light Cove Drywall Knife Edge (ULDK)

Trim Purpose

 Specs, MSDS, and LEED Information for Flannery Trims & Products

Flannery’s Strata Universal Light Cove Drywall Knife Edge (ULDK) is an extruded aluminum trim that creates a ledge for LED’s or a light fixture over a suspended drywall ceiling and allows for an indirect lighting effect. The Knife Edge has a sloped edge to create a unique cove detail which allows for an indirect lighting effect above suspended drywall track and gypsum board. Our Light Coves are called “Universal” since any LED or Light Fixture manufacturer can be integrated into them.

Manufacturer’s Specification

Flannery’s Strata Universal Light Cove Drywall Knife Edge trims are a standard extruded aluminum product with a 6063 T5 alloy with a minimum .063” wall thickness. The ULDK trims are sold in 10’ lengths and come with Grid Clips and Trim Splices to ease their integration into the suspended ceiling system.

Flannery stocks all Strata Trims in our Cloud White factory paint finish or Mill Finish for field painting. Flannery’s Cloud White paint is a factory applied Kynar finish. In addition to our standard finishes, Strata trims can also be ordered in any liquid or powder-coated paint finish. Custom paint orders can be quoted, and samples prepared for approval.

Additional finishes include anodizing, polishing, brushing, and “wood-grain” applications. Take a look at all of our factory finishes that we have to offer and if you can’t find what you are looking for, contact us and let us know and we can get you what you need.

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Product No. Downloads
ULDK 450 DWG - Universal Light Cove Drywall Knife Edge (ULDK)PDF - Universal Light Cove Drywall Knife Edge (ULDK)


Installation Details

Connect the Universal Light Cove Drywall Knife Edge trim to the suspended ceiling grid using the Ceiling Grid Clips that are provided. Rotate the Ceiling Grid Clip into the slots on the back of the Light Cove Edge trim and tighten the lock screw. Then attach the 45 Degree Ceiling Grid Clip to the acoustical ceiling grid. Placement of the grid’s hanger wire must not be more than 12 inches from where the trim connects to the grid. Distance between grid attachments must not exceed 48 inches.

Gypsum Board should be attached to suspended ceiling track and laid flush against the lower leg of the ULDK. Apply compound joint over the flange and feather accordingly.

Use the Ceiling Cloud Trim Splices included to connect one piece of trim to the next for level and clean butt joints. All Strata Cloud trims must be cut accurately and installed with tight, neat joints. Manufacturer recommends that a carbide tip blade along with blade lubricant be used when cutting any aluminum trim.


Factory Corners

Flannery offers prefabricated Inside and Outside Corners for intricate ceiling designs that utilize our Strata Universal Light Cove Drywall Knife Edge trim. Prefabricated corners are factory mitered and then welded together to prevent separation during the edge trim installation. These welded corners also allow the installer to maintain a straight and true layout of any rectangle or square ceiling. Factory welded corners come with 8” legs in each direction, however, custom leg lengths can be ordered. Factory cutting and mitering for custom ceiling projects are also available.


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