Built-In Microwaves
A built in microwave installs in a cabinet or a wall, usually with a trim kit that frames it flush with the cabinetry, so it looks like part of the kitchen rather than an appliance on the counter. Some built-in models are countertop microwaves designed to accept a matching trim kit; others are dedicated built-in units, often with convection or speed cooking, made to sit above or beside a wall oven. Check the cabinet cut-out against the trim kit dimensions, the ventilation clearance the installation guide requires, and where the electrical outlet sits inside the cabinet.
All Make Appliance lists 72 built-in microwaves from 18 brands, including KitchenAid, Sharp, Summit and Thor Kitchen. 31 of them are in stock right now, and every listing below shows its current availability. Free NJ/NY-metro delivery on orders over $499.

24 Inch Built-In Side Swing Microwave Oven 1.5 Cu. Ft., 900W
Model: UMBW2411AS
30" Built-In Convection Microwave Oven with Air Fry
Model: PMBD3081BF
2.2 Cu. Ft. Built-In Microwave
Model: PMBS3080BF
30" Built In Microwave Oven with Air Fry

30" Built In Microwave Oven With Air Fry

Multifunction Over-the-range Oven With Flush Built-in Design

30" Built-In Microwave Oven with Drop-Down Door
Model: GMBD3068AF
2.2 Cu. Ft. Built-In Microwave
Model: GMBS3068BF
1.6 Cu. Ft. Built-In Microwave
Model: FMBS2227BB
30" Built-In Side Swing Microwave Oven
Model: EMBS2411BB
Café Built-in Microwave Drawer Oven
Model: CWL112P2RS1
Café Built-in Microwave Drawer Oven
Model: CWL112P4RW5
Built-In Microwave Drawer
Model: XOMWD24SM
Built-In Microwave Drawer
Model: XOMWD24S
24 In. 1.2 Cu. Ft. Built-in Microwave Drawer™ Oven In Stainless Steel
Model: SMD2420MS
24 In. 1.2 Cu. Ft. Built-in Microwave Drawer™ Oven In Stainless Steel
Model: SMD2430MS
24 In. 1.2 Cu. Ft. Built-in Stainless Steel Microwave Drawer™ Oven
Model: SMD2440JS
24 In. 1.2 Cu. Ft. Deco Series Built-in Smart Microwave Drawer™ Oven With Easy Wave Open In Black
Model: SMD2479MB
24 In. 1.2 Cu. Ft. Deco Series Built-in Smart Microwave Drawer™ Oven With Easy Wave Open In White
Model: SMD2479MW
24 In. Built-in Smart Convection Microwave Drawer™ Oven
Model: SMD2499FS
30" Built In Microwave Oven With Convection Cooking

300 Series Built-In Microwave Oven 24'' Left SideOpening Door
Model: HMB30155UC
500 Series Built-In Microwave Oven 30''
Model: HMB50152UC