How do I make this door script open using Tween Service, instead of CFrame?

I'm not sure how to make this Key Card door open using tween, instead of CFrame.

Here's the door code:

local door = script.Parent
local bool = true
local bool2 = true
local clearance = {
    ["Card-Omni"] = true, 
    ["Card-L5"] = true, 
    ["Card-L4"] = true,
    ["Card-L3"] = true,
    ["Card-L2"] = true,
    ["Card-L1"] = true,
    ["Armory Card"] = true,

}

function openDoor()
    script.Parent.DoorOpen:play()
    for i = 1,(door.Size.z / 0.30) do
        door.CFrame = door.CFrame - (door.CFrame.lookVector * 0.30)
        wait()
                end
    door.Transparency = 1
            for i,v in pairs(door:GetChildren()) do
                if v:IsA("Decal") then
                    v.Transparency = 1
        end
    end
    wait(3)
    door.Transparency = 0
            for i,v in pairs(door:GetChildren()) do
                if v:IsA("Decal") then
                    v.Transparency = 0
                end
            end
    script.Parent.DoorClose:play()
    for i = 1,(door.Size.z / 0.30) do
        wait()
        door.CFrame = door.CFrame + (door.CFrame.lookVector * 0.30)
        end
    end

script.Parent.Parent.KeycardReader1.touched:connect(function(touch)
    if touch.Name == "Handle" and clearance[touch.Parent.Name] and bool then
        bool = false
        script.Parent.AccessGranted:play()
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Lime green")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Lime green")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Lime green")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Lime green")

        openDoor()
        wait(1)
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Lily white")

        bool = true
    elseif touch.Name == "Handle" and not clearance[touch.Parent.Name] and bool2 then
        bool2 = false
        script.Parent.AccessDenied:play()
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Really red")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Really red")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Really red")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Really red")
        wait(1)
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Lily white")
        bool2 = true
    end
end)

script.Parent.Parent.KeycardReader2.touched:connect(function(touch)
    if touch.Name == "Handle" and clearance[touch.Parent.Name] and bool then
        bool = false
        script.Parent.AccessGranted:play()
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Lime green")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Lime green")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Lime green")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Lime green")

        openDoor()
        wait(1)
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Lily white")

        bool = true
    elseif touch.Name == "Handle" and not clearance[touch.Parent.Name] and bool2 then
        bool2 = false
        script.Parent.AccessDenied:play()
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Really red")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Really red")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Really red")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Really red")
        wait(1)
        script.Parent.Parent.Light1.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light2.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light3.brickColor = BrickColor.new("Lily white")
        script.Parent.Parent.Light4.brickColor = BrickColor.new("Lily white")
        bool2 = true
    end
end)