Lutron Serena Wood Blinds Application Note: Specifying Custom Valance Returns (048752)

Installation walk-through for 048752

Lutron document 048752 gives five steps, in the document's order.

The clearance, the check and the warning under a step are the document's own.

1. Measure the window depth

   Measure the reveal depth where the blind would sit. Take off an allowance for cranks, handles or other hardware in the blind's path.

   Use the reduced figure from here on.

   Warning: Lutron marks the hardware allowance "IMPORTANT": cranks, handles and similar hardware may interfere with the blind's normal movement.

2. Find the case

   Place the window depth in its band.

   Case A is under 2 in (50.8 mm) and case B up to 2 1/2 in (63.5 mm). Case C runs up to 3 5/8 in (92 mm) and case D beyond.

   Clearance: Band limits 2 in (50.8 mm), 2 1/2 in (63.5 mm), 3 5/8 in (92 mm)

3. Size partial-recess returns (case B)

   Subtract the window depth from the 3 in (76.2 mm) standard return. Lutron's example: a 2 1/4 in window gives 3/4 in returns.

   Clearance: Custom return 1/2 in to 1 in (12.7 mm to 25.4 mm)

   Check: The calculated return sits inside the partial-recess range.

4. Specify no returns for cases C and D

   Case C recesses partly but would need a return under 1/2 in (12.7 mm), so order no returns and expect visible cut edges. Case D allows the blind and valance to recess fully, also with no returns.

5. Size outside-mount returns on spacers or trim

   Add the spacer or trim protrusion to the 3 in (76.2 mm) standard return. On 3/4 in (19 mm) trim that gives 3 3/4 in (95.25 mm).

   Above trim, order the blind as wide as the trim.

   Clearance: Custom return 3 1/8 in to 4 in (79.4 mm to 101.6 mm)

   Check: The calculated return sits inside the outside-mount range.