Each 135° low profile corner is approx 3 1/2" from center to end as depicted in photo! I also installed guide tabs to make transition easier! purchase price is for 2 transitions. These can be modified to any angle that you prefer? I can also fabricate inside corners. These have also been primed with Zinsser 123 stain blocker and painted two coats with Benjamin Moore super white semi-gloss paint! block in photo is made to transition with standard 3 5/8 moulding! If you need more/less or wish to combine one with any over my other listings just send me a message and I will create a listing for you!