We supply windows, sliding doors and french doors from: Cascade, Jeld-Wen, Milgard, Ply Gem, Velux Skylights and Hy-Lite Blocks. 

Hy-Lite Blocks

​"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.


Cascade Windows
Velux skylights
Masonite Doors


El and EL Wood Products

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


Simpson Door

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

Plastpro Doors
Ply Gem Windows


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

schedule an appointment.

1031 Junction Blvd.

Suite 803
Roseville, CA 95678

(916) 771-3627


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

Phase Four Supply  is a  local and family operated company that strives to build lasting relationships with strong product knowledge, customer service and fair pricing. We will do our best to serve you with products that will enhance your
business and home. With over 20 years in the industry, we are confident that we can be a solid source for you.