Black Series Trailer RV Replacement Window | Double Pane Acrylic | Fly Screen & Shade | 21.7” × 35.4”

Replace a cracked, foggy, or leaking window on your Black Series HQ trailer with this exact-fit double-pane acrylic replacement window. The 21.7″ × 35.4″ (550 × 900 mm) unit pairs a tinted dual-pane acrylic window with a built-in fly screen and pull-down shade in one integrated slide-in cassette — insulation, privacy, ventilation, and bug protection in a single assembly.

Fits these Black Series window positions

• HQ21 Passenger Side Lounge Window
• HQ15 Passenger Side Bedroom Window
• HQ15 Bedroom Side Window (fits both sides)

Black Series part #: EXT17905  ·  Window size: 21.7″ × 35.4″ (550 × 900 mm)

Features

• Double-pane acrylic construction for better thermal insulation and less condensation
• Integrated fly screen keeps bugs out while you ventilate
• Built-in pull-down shade for privacy, blackout, and UV/heat control
• Smooth slide-in cassette operation
• Tinted acrylic reduces glare and adds daytime privacy

Note: The HQ15 has been updated over its production run. Measure your existing window or contact us to confirm dimensions before ordering.

Before you order

Confirm your existing cut-out size before purchasing — these windows are sold by exact size and position. Not sure which one you need? Browse all Black Series replacement windows or send us your model and window location and we'll confirm the right fit. Ships fast from our Upland, CA warehouse.