Bliwans Light Blocking Strips for Window Shades — 58" White L‑Shaped PVC Side Tracks, 2‑Pack, 100% Blackout Edge

Bliwans Light Blocking Strips are L-shaped PVC side tracks that attach to blinds and shades to block side light leakage and create a near-total blackout.

These 58" white PVC side tracks are designed to eliminate the narrow gaps that let light through around blackout shades, roller blinds, honeycomb and cellular treatments. Made from light-absorbing PVC, each L-shaped strip mounts along a window jamb or adheres to the shade edge so you get a darker room without changing your existing window coverings. They arrive as a 2-piece set sized to fit most windows and can be trimmed for a custom fit.

How do these strips reduce light leaking around my shades?

The L-profile fits beside the shade or curtain to intercept light that typically squeezes through the side gaps. The inner face absorbs and blocks incoming rays, while the outer flange creates a shadow line so less light reaches the room interior.

• Installed along the jamb or shade edge to cover side gaps
• Light-absorbing PVC minimizes reflection and stray light
• Works with roller shades, cellular/honeycomb, roman shades and blinds
• Creates a continuous dark edge for improved blackout performance

Will these strips fit my window, and how do I size them?

Each strip measures 58" long, 1.65" wide and 1" deep and can be trimmed to match your window height or the shade length. The material cuts cleanly with household tools, allowing a precise fit for most residential windows.

• Full length: 58"; trim with scissors or a hacksaw
• 1.65" flange covers the shade-side gap effectively
• L-shape allows mounting inside or outside the frame for flexibility
• Two pieces per pack for a paired-window or double-hung application

How easy is installation and will I need special tools?

Installation is straightforward and designed for DIY use without complex tools. The strips are lightweight and can be positioned and secured quickly; many users mount them with adhesive or screws depending on their window jamb material and permanence required.

• Lightweight PVC for easy handling and placement
• No specialized tools required — scissors or saw to trim, adhesive or screws to fix
• Compatible with a wide range of blind and shade styles
• Removable and adjustable for redecorating or temporary setups

What room types and situations benefit most from these light-blocking strips?

They are ideal wherever you need improved darkness, privacy or reduced glare—bedrooms, nurseries, home theaters, shift-worker rooms, and any space sensitive to morning or streetlight. Because they attach to the shade edge rather than replacing treatments, they’re a cost-effective upgrade.

• Bedrooms and nurseries for improved sleep environments
• Home theaters and media rooms for better picture contrast
• Rooms facing bright streets or early sun for glare reduction
• Renters and homeowners who want a non-invasive blackout solution

Who is this for: Bliwans Light Blocking Strips are a practical choice for homeowners, renters, parents and anyone who already has blackout shades or opaque blinds but still experiences light gaps. If you want a simple, affordable way to deepen room darkness without replacing window treatments, these PVC L-shaped side tracks fit trims and most shade types, are easy to cut to size, and install with minimal tools. Bliwans includes a customer service promise: if you receive damaged or defective pieces within the warranty window, support will help with replacements to ensure satisfaction.