3-1/4” x 10” Rectangular Duct Vent Cap
$36.99 on Amazon.com (as of October 15, 2026, 6:40 PM EST) View details ↗
A high-performance **3-1/4” x 10” rectangular duct vent cap** designed for seamless outdoor air exhaust applications, ensuring efficient ventilation for microwaves, range hoods, and kitchen stoves. This durable wall vent cap features a secure spring-loaded damper with a silicone cushion pad, maintaining a tight seal when not in use to prevent drafts, pests, or external air from entering—saving energy and reducing noise. The galvanized steel construction (28-gauge) resists rust and corrosion, making it ideal for long-term kitchen or bathroom ventilation needs.
The vent cap includes a removable bird-proof screen that opens easily with a Phillips screwdriver, allowing for quick and hassle-free cleaning of debris without disassembling the entire unit. The duct fitting extends **4-7/8”** from the cap, ensuring a snug connection to rectangular ductwork for reliable wall vent installation. Designed exclusively for rectangular ducts (not compatible with dryer vents), this vent cap is a practical solution for improving airflow while maintaining a clean, secure seal.
| Duct Size Fitment | 3-1/4” x 10” rectangular duct |
|---|---|
| Material | 28-gauge galvanized steel (rust/corrosion-resistant) |
| Duct Fitting Extension | 4-7/8” from cap for secure connection |
| Damper Seal | Spring-loaded with silicone cushion pad |
| Screen Access | Removable via Phillips screwdriver |
| Overall Dimensions | 10-1/4” wide x 3-2/5” high |






