I did not have the room for a tent so created these 4 top brackets to fully enclose my Ender 5 plus.  You can likely also use these on a 5-pro, but I don't own that to verify.

Each corner is different, slots for Coroplast sheets and .25" plexi.  Make some hinges and locks for a front door…and you are enclosed.  Right hand side bottom enclosure is lower to clear the stepper (and I use a cable chain to keep the wires safe).

I used a cheap ceramic heater (Amazon.com: andily Space Heater Electric Heater for Home and Office Ceramic Small Heater with Thermostat, 750W/1500W : Home & Kitchen)  and a adjustable temp controller (Amazon.com: Elitech STC-1000WiFi TH Pre-Wired Humidity Temperature Controller 110V 1100W 10A Mushroom Greenhouse Homebrew : Appliances) to get my chamber where I need it.

Slid Coroplast sheets into the frame extrusions and lined with heat reflective fabric.  Works very well!

A long time ago I designed and printed boxes to move the electronics outside of the chamber so they were easier to access and don't overheat.  Octoprint, camera, neopixles to track print status and temp warm ups.