Replaces a similar four year old Black & Decker: Just fits Calphalon 9x13 cake pan - straight up sides, no lip or hand grip! The interior is deeper by 1+ inch and slightly taller (~6in.to element) than old - I think it's great. It's 1500 watts (1200 watt, not enough for me) with digital heat setting and timer; my first test 430 deg. 60 min. If using bake settings, adjust time & temp, then turn on convection. The heating elements are quick and responsive; 2 top and 2 bottom can run simultaneously (bake) and with convection, this thing cooks! Typical meals; pizza, chicken (10 lb, 1-cut @ backbone-lay flat in pan), fish etc., never tried toast. Why not 5 stars? Digital controls require coordination and decent eyesight (also must read instructions) - so not for very young or old. Also requires experimentation to get right i.e timer only begins when initial temperature setting achieved. Surfaces hot: front door is one layer glass (hot!). Warm/hot surfaces are not unusual in this category - for me it's not a problem. For $100 or less, there are not many 1500-watt convection ovens that can fit 13x9" pans (remember no lip grip!), even if just barely. If you have the counter space, OK with digital controls, read instructions, don't mind adapting and experimenting, no issues with very young or old, it may be just what you need. I am very happy with my purchase of this convection oven.