Siding Outside Corner

Trim Purpose

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

Flannery’s Siding Outside Corner is a trim that creates a sharp and crisp corner edge where siding is installed on walls that meet at a 90° outside corner joint. The Outside Corner trim creates a solid and clean corner for the siding system which would normally require the siding to be mitered and laid together at the edge. With a 1″ flange, the Outside Corner allows the installer to slide the siding in behind the flange and cover the unfinished edges of the mitered siding. The larger face leg of the Siding Outside Corner also allows for the possible expansion or contraction of the siding along a horizontal run.

Manufacturer's Specifications

Flannery’s Siding Trims are standard extruded aluminum alloy 6063 T5 and have a .050” nominal wall thickness. Aluminum panel trims come in 10′ lengths and shall have a standard Clear Anodized Finish. Mill Finish (for field priming & painting), Chem-film finish or other factory finishes and custom paint orders are available. Flannery has a limited stock of factory paint colors to match Trugrain made with Resysta stains, please call for availability. Click on Info Tab above for Factory Finishes.

Part No. “A” Width “B” Width Compatible Siding Stock Item
SOC 625-100 5/8″ 1″ TGR 1/2″ Siding Flatboard Yes
SOC 875-100 7/8″ 1″ TGR 3/4″ Hollow Board Yes
05 Siding Outside Corner A B Dimen Scale R3 1000 BjB 1 - Siding Outside Corner

Installation of Siding Trims must be in accordance with the Siding Manufacturer’s Instructions. For TruGrain made with Resysta Siding’s installation instructions, please visit their website,

05 Siding Outside Corner Install Detail R5 BjB - Siding Outside Corner