The LFX21976ST has the following dimensions: (W x H x D) 35 3/4" x 69 3/4" x 30". ^CP

Hi Nick.
Thank you for your inquiry.
You really will need to consult a qualified plumber with regards to connecting your reverse osmosis system to the LG - 20.5 Cu. Ft. Counter-Depth French Door Refrigerator - Stainless-Steel, Model # LFX21976ST. Any refrigerator regardless of manufacture has an optimal PSI for Ice Cube production which will affect the production if it is not correct...IFV

Any parts, accessories, or components for this LG 19.8 Cu. Ft. Counter-Depth French Door Refrigerator - Stainless steel, Model # LFX21976ST can be ordered from:
Encompass Parts Distribution 775 Tipton Industrial Dr. Suite F Lawrenceville, GA 30046 Sales: 866-779-7906 Fax: 800-552-1431 https://lg.encompass.com ...^IFV

The refrigerator should always be plugged into its own individual properly grounded electrical outlet rated for 120 volts, 60 Hz, AC only, and fused at 20 amperes. This provides the best performance and also prevents overloading house wiring circuits which could cause a fire hazard from overheated wires. It is recommended that a separate circuit serving only this appliance be provided. ^CP

We appreciate your feedback regarding the LFX32976ST not having an air filter. We will pass this feedback to our design team for consideration as we produce future models. ^CP