What I found when I bought a commercial-grade WiFi access point - WorldCAD Access
Amazon.com: TRENDnet AC1200 Dual Band WiFi Router, TEW-831DR, Gigabit WAN Port, 4 x 5dBi Antennas, Wireless AC 867Mbps, Wireless N 300Mbps, Business/Home Wireless AC Router for High Speed Internet,MU-MIMO Support : Everything
Amazon.com: NETGEAR Nighthawk X10 Smart WiFi Router (R9000) - AD7200 Wireless Speed (up to 7200 Mbps) for 60Ghz WiFi Devices | Up to 2500 sq ft Coverage | 6 x 1G Ethernet,