The ThermaFusion 4ft Porch Swing combines a solid Northern White Cedar log frame with thermally modified wood slats on the seat and back. At four feet wide, it fits well on standard porches and seats two adults comfortably. The cedar frame uses mortise and tenon joinery reinforced with hardware, handcrafted in Edmore, Michigan.
Thermally modified slats are produced through a chemical-free heat treatment that permanently changes the cellular structure of the wood, making them more resistant to moisture, warping, and decay than standard alternatives. The contoured slat profile provides ergonomic support for extended swinging sessions.
No finish or sealant is required on either material. The Northern White Cedar frame can be left untreated year-round. A penetrating oil applied every few years maintains the original warm tone if preferred. Mounting hardware not included — hang with chain or rope rated appropriately for occupant weight.
About ThermaFusion Construction
ThermaFusion is Lakeland Mills' hybrid outdoor furniture line, combining solid Northern White Cedar log frames with thermally modified wood slats. The cedar log frames use the same mortise and tenon joinery Lakeland Mills has built with since 1923 — real logs, real construction, made in Edmore, Michigan. The thermally modified slats undergo a chemical-free heat treatment that makes them significantly more resistant to moisture, warping, and decay than untreated wood. Both materials are designed for permanent outdoor installation without annual maintenance.
A Note on Log Checking
The cedar log frame components may develop small surface cracks as the wood acclimates to changes in temperature and humidity. This is a normal characteristic of solid cedar construction — not a defect — and does not affect structural integrity. The thermally modified slats will not develop this type of surface checking. For more information on cedar checking, see: Log Checking Overview, Cracking the Mystery of Log Checking, and An Academic Look at Log Checking.
Dimensions
- Overall: 48"W x 21"D x 18"H
- Seat Height: 18"
- Mounting hardware not included
- SKU: TC5448
Shipping & Returns
Ships via UPS Ground. Most orders arrive within 1 to 3 business days of shipment. Free shipping on outdoor furniture over $149 within the contiguous 48 states. To check on a shipment or ask about your order, call 989-427-5133. Returns accepted within 30 days of delivery — contact us before returning to receive return instructions and a return authorization.
FAQ
- Does ThermaFusion furniture require sealing or finishing? The thermally modified slats require no sealant or finish — the thermal modification process provides superior resistance to moisture and decay. The cedar log frame can be left untreated as well; it will weather gradually to a silver-grey, or you can apply a penetrating oil to maintain the original tone.
- What is thermal modification and why does it matter? Thermal modification is a chemical-free heat treatment that permanently changes the cellular structure of the wood, making it significantly more resistant to moisture, warping, and decay. No preservatives or chemicals are involved — just heat.
- Can I leave ThermaFusion furniture outside year-round? Yes. Both the Northern White Cedar log frame and the thermally modified slats are designed for permanent outdoor exposure through all four seasons without requiring shelter or covers.
- Does the furniture come assembled? ThermaFusion furniture ships partially assembled with all hardware and detailed instructions included. Most pieces can be completed in under an hour.
Manufacturer
Lakeland Mills has been manufacturing cedar log furniture in Edmore, Michigan since 1923. ThermaFusion products combine Northern White Cedar log frames with thermally modified wood slats, built and assembled in the USA. For product questions, custom requests, or finish options, call 989-427-5133.
1-Year Limited Warranty
ThermaFusion products are covered by a 1-year limited warranty against manufacturing defects in materials and workmanship. This warranty covers structural failures and defects present at time of manufacture. It does not cover normal weathering, surface checking of cedar components, or damage from misuse, modification, or exposure to conditions beyond normal outdoor use. To make a warranty claim or ask a warranty question, contact Lakeland Mills at 989-427-5133.
