Light filtering softens daylight and reduces glare while keeping the room bright. Room darkening reduces much more light for better privacy and rest. Blackout blocks light through the fabric, but you can still see edge light depending on the mount.

Not always. Edge light is usually about mounting and coverage. Inside mounts can show more light at the sides. Outside mounts can reduce gaps by adding overlap around the window.

Cordless reduces accessible cord concerns. Continuous-loop controls can work well, but they must be installed with proper tension/anchoring and safe cord practices—especially around children.

Inside mount looks more built-in. Outside mount typically blocks more edge light because it covers more area around the opening. The best choice depends on whether you value the cleanest look or the most coverage.

Depth needs depend on cassette size and window conditions. The important step is checking depth plus any obstructions before choosing a cassette style.

Often, yes. Reverse roll is a common option that helps the fabric clear cranks and handles and reduces rubbing in tight areas.