Based on this product's specifications, here are some alternatives and similar models
WLAN access point mount Lancom Systems IAP Mount for IAP-821 IAP-822 IAP-4G, stainless steel
Summary description:
Mount for WLAN access points by Lancom Systems, model IAP Mount designed for IAP-821, IAP-822 and IAP-4G devices. Made of stainless steel, it provides a durable mounting solution for indoor or sheltered outdoor installations. Intended to fix compatible Lancom IAP units securely to walls or poles; package weight 190 g. Origin: Germany.