Phase Four Supply in Roseville is a wholesale supplier of Windows, Doors, Moulding and
​Trim Packages to contractors, ​builders and property investors.

We are known for our personalized customer service, attention to detail, strong product knowledge and competitive prices.  Phase Four Supply is a dependable partner, helping to make your next project more profitable.

Our showroom is conveniently located off of Hwy 65 and Blue Oaks Blvd in Roseville.

Showroom by appointment only.


​Please give us a call or send us an email to

schedule an appointment.

We supply moulding products including baseboard, crown moulding and casing from El & El Wood Products and Kelleher Corporation.


10600 Industrial Avenue

Suite 110
Roseville, CA 95678

(916) 771-3627

​"Don demonstrated exceptional customer service.  He has great attention to detail and even made recommendations on options we hadn't even considered.  We are very happy with the products and service we received. We are also utilizing Phase Four Supply for a couple windows we will be replacing in our home very soon."   T.A., Rocklin,CA

"​Phase Four Supply is an amazing window and door company. We worked with them on several occasions on two homes that we are renovating. While working to replace windows at both houses, we never considered anyone else. Why would we? The  prices were excellent, his attention to detail was also excellent. I felt  relaxed and supported with any window related issue. We will absolutely work with them on the next job."  Mary Anne K.​

"These guys were amazing. Great prices, selection and service. I purchased windows for a total window replacement for my house. Don and his team did a great job communicating and handling everything I could not have asked for more. I would highly recommend Phase Four Supply for future work."  Stuart K.

We supply interior and exterior doors from:  Masonite, Plastpro, ​Simpson, TruStile, Krosswood and Signamark


We supply windows, sliding doors and french doors from: Cascade, Jeld-Wen, Milgard, Ply Gem,
​All Weather Architectural Aluminum, LaCantina folding door systems, Velux Skylights and Hy-Lite Blocks.