Inside mount
Clean fit inside the opening, with visible edge gaps determined by hardware and window shape.
Blackout fabric can stop light through the material while light still enters around the edges. The mount and surrounding window geometry are part of the room-darkening system.

Check the head, sides, sill, and any projecting hardware. An outside mount can increase coverage, while side channels or light blockers may be appropriate when the documented room goal requires them.
Clean fit inside the opening, with visible edge gaps determined by hardware and window shape.
More overlap can reduce side light when wall and trim space allow.
A curtain or second treatment can address residual gaps and soften the room.

A blackout roller can use an outside mount for greater overlap, with U-shaped light blockers when the room goal and opening allow. The written plan should show those accessories instead of adding them as a surprise later.
These answers use current BLINDS100 pricing and offer rules. The exact written project is confirmed after measurement.
Solution accessories are included when they are needed for the documented window goal. Product, size, system, power, and other option increments remain separate.
No. Room geometry, mount, gaps, doors, and other light sources matter.
It can provide a softer profile and cellular construction. Compare fabric opacity, rails, mount, and edge coverage.
The city page explains service context. The topic guide explains the decision. The planner compares the real project and eligible savings.
BLINDS100 serves residential projects from Harbor City across the nearby South Bay. Service depends on the address and project scope.
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Residential service within 15 driving miles of Harbor City.