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)