https://firealarmmax.com/product/cooper-wheelock-iob-w-weatherproof-back-box/
Cooper Wheelock IOB-W Weatherproof back box | Fire Alarm Max
May 12, 2026 - The Cooper Wheelock IOB-W is a white Weatherproof Backbox featuring a threaded conduit hole and knockout for outdoor applications.
cooper wheelockback boxfire alarmiobweatherproof
https://www.jmac.com/Cooper_Wheelock_E90H_W_p/COOPER-WHEELOCK-E90H-W.htm
E90H-W Cooper Wheelock
cooper wheelock
https://www.buypsa.com/SSB-4_2026
Item: SSB-4 [Cooper Notification (Wheelock)]
itemssbcoopernotificationwheelock