Curtains and blinds · Planner

Inside vs outside mount blinds planner

Compare inside-mount and outside-mount blind options using real window measurements. The planner checks recess depth, flags awkward openings, suggests overlap, and turns the measuring job into a clearer ordering plan.

Measure the opening

Target search intent: inside mount vs outside mount blinds, how to measure for blinds, and what size blinds to order.

How to use the result

Measure width at the top, middle, and bottom because window openings often taper.
Measure height on the left, centre, and right because sills and lintels are rarely perfectly square.
Recess depth minus any projecting handles is the important clearance number for inside mounts.
Outside mounts usually block more side light, but they need enough flat fixing area or wall space.

Manufacturer deductions vary. Use this page to choose the mount and collect the right numbers, then confirm the retailer’s exact ordering convention.

Read the launch note for this planner.

Recommendation

Mount comparison

Inside mount is best when

You want the blind tucked into the recess for a cleaner built-in look.
The opening has enough clear depth for the headrail and slats or fabric roll.
You can tolerate a little side-light gap and minor frame irregularity.

Outside mount is best when

You need better blackout performance or more privacy at the edges.
The recess is shallow, obstructed, or visibly out of square.
You want to cover awkward trim, hide a wonky frame, or make the window look larger.